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Physics

CAIE2024

BI Hall voltage V = H ntq alternating current/voltage x = x sin ωt

Question

Physics

CAIE2024

(cid:44)(cid:1)(cid:1)(cid:1)(cid:1)(cid:9)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:2)(cid:8)(cid:44) (i) Explain why the two wires exert a magnetic force on each other. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ..................................................................................................................................... [2] (ii) On Fig. 7.2, draw an arrow to show the direction of the magnetic force exerted on wire X. Label your arrow F. [1] (iii) The current in X is double the current in Y. State how the magnetic force exerted on wire Y compares with the magnetic force exerted on wire X. ........................................................................................................................................... ........................................................................................................................................... ..................................................................................................................................... [2] (iv) The direction of the current in both wires is now reversed. State, with a reason, the effect of this change on the direction of the force on wire X. ........................................................................................................................................... ..................................................................................................................................... [1] [Total: 11] © UCLES 2024 (cid:300) (cid:300) (cid:207) (cid:224) (cid:266) (cid:190) (cid:190) (cid:252) (cid:288) (cid:211) (cid:180) (cid:292) (cid:237) (cid:290) (cid:200) (cid:247) (cid:245) (cid:228) (cid:207) (cid:248) (cid:298) (cid:241) (cid:197) (cid:239) (cid:266) (cid:263) (cid:224) (cid:278) (cid:252) (cid:242) (cid:182) (cid:257) (cid:260) (cid:288) (cid:215) (cid:258) 9702/43/O/N/24 [Turn over (cid:293)(cid:197)(cid:293)(cid:213)(cid:245)(cid:245)(cid:197)(cid:277)(cid:261)(cid:261)(cid:229)(cid:197)(cid:197)(cid:245)(cid:229)(cid:181)(cid:293)(cid:213) NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD PMT * 0000800000018 *

Question

Physics

CAIE2024

BI Hall voltage V = H ntq alternating current/voltage x = x sin ωt

Question

Physics

CAIE2024

(cid:44)(cid:1)(cid:1)(cid:1)(cid:1)(cid:9)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:2)(cid:8)(cid:44) (i) Explain why the two wires exert a magnetic force on each other. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ..................................................................................................................................... [2] (ii) On Fig. 7.2, draw an arrow to show the direction of the magnetic force exerted on wire X. Label your arrow F. [1] (iii) The current in X is double the current in Y. State how the magnetic force exerted on wire Y compares with the magnetic force exerted on wire X. ........................................................................................................................................... ........................................................................................................................................... ..................................................................................................................................... [2] (iv) The direction of the current in both wires is now reversed. State, with a reason, the effect of this change on the direction of the force on wire X. ........................................................................................................................................... ..................................................................................................................................... [1] [Total: 11] © UCLES 2024 (cid:300) (cid:300) (cid:207) (cid:223) (cid:266) (cid:287) (cid:190) (cid:252) (cid:288) (cid:219) (cid:180) (cid:290) (cid:237) (cid:269) (cid:200) (cid:273) (cid:245) (cid:226) (cid:207) (cid:261) (cid:298) (cid:237) (cid:197) (cid:298) (cid:266) (cid:213) (cid:224) (cid:184) (cid:249) (cid:283) (cid:182) (cid:290) (cid:260) (cid:292) (cid:215) (cid:258) 9702/41/O/N/24 [Turn over (cid:293)(cid:229)(cid:229)(cid:213)(cid:181)(cid:213)(cid:293)(cid:213)(cid:293)(cid:293)(cid:245)(cid:261)(cid:261)(cid:181)(cid:261)(cid:213)(cid:229)(cid:213) NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD PMT * 0000800000018 *

Question

Physics

Edexcel2024

RC F = mrω2 In a magnetic field Fields F = BIl sin θ Coulomb’s law F = Bqv sin θ Q Q F = 1 2 4πε r2

Question

Physics

CAIE2024

(a) Define magnetic flux density. ................................................................................................................................................... ................................................................................................................................................... ............................................................................................................................................. [2] (b) A long, straight wire carries a current into the page, as shown in Fig. 7.1. Fig. 7.1 On Fig. 7.1, draw four field lines to represent the magnetic field around the wire due to the current in it. [3] (c) Two identical wires X and Y are placed parallel to each other. The wires both carry current into the page, as shown in Fig. 7.2. X Y Fig. 7.2 (cid:300)(cid:205)(cid:266)(cid:190)(cid:288)(cid:180)(cid:237)(cid:200)(cid:245)(cid:207)(cid:298)(cid:197)(cid:266)(cid:224)(cid:250)(cid:182)(cid:260)(cid:215) © UCLES 2024 (cid:300)(cid:224)(cid:189)(cid:251)(cid:219)(cid:294)(cid:286)(cid:263)(cid:213)(cid:258)(cid:256)(cid:186)(cid:211)(cid:286)(cid:230)(cid:257)(cid:272)(cid:258) 9702/43/O/N/24 (cid:293)(cid:197)(cid:277)(cid:277)(cid:181)(cid:277)(cid:229)(cid:245)(cid:277)(cid:245)(cid:245)(cid:197)(cid:197)(cid:277)(cid:197)(cid:245)(cid:245)(cid:213) NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD PMT * 0000800000017 *

Question

Physics

CAIE2024

BI Hall voltage V = H ntq alternating current/voltage x = x sin ωt

Question

Physics

Edexcel2024

A square coil has sides of length l and carries a current I, as shown. The plane of the coil is parallel to a magnetic field of flux density B. Q R magnet magnet coil P S North I South Which row of the table gives the magnetic force on the named side of the coil? Named side Magnetic force A PQ BIl to the left B QR BIl to the right C RS BIl upwards D SP BIl downwards (Total for Question 6 = 1 mark)

Question

Physics

CAIE2024

(a) Define magnetic flux density. ................................................................................................................................................... ................................................................................................................................................... ............................................................................................................................................. [2] (b) A long, straight wire carries a current into the page, as shown in Fig. 7.1. Fig. 7.1 On Fig. 7.1, draw four field lines to represent the magnetic field around the wire due to the current in it. [3] (c) Two identical wires X and Y are placed parallel to each other. The wires both carry current into the page, as shown in Fig. 7.2. X Y Fig. 7.2 (cid:300)(cid:205)(cid:266)(cid:190)(cid:288)(cid:180)(cid:237)(cid:200)(cid:245)(cid:207)(cid:298)(cid:197)(cid:266)(cid:224)(cid:251)(cid:182)(cid:260)(cid:215) © UCLES 2024 (cid:300)(cid:223)(cid:288)(cid:251)(cid:211)(cid:296)(cid:273)(cid:289)(cid:215)(cid:243)(cid:260)(cid:223)(cid:257)(cid:192)(cid:191)(cid:290)(cid:276)(cid:258) 9702/41/O/N/24 (cid:293)(cid:229)(cid:213)(cid:277)(cid:245)(cid:181)(cid:261)(cid:181)(cid:245)(cid:277)(cid:229)(cid:261)(cid:261)(cid:213)(cid:293)(cid:277)(cid:181)(cid:213) NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD PMT * 0000800000017 *

Question

Physics

Edexcel2024

Faraday’s and Lenz’s laws Electric field strength −d(Nϕ) E = F dt E = Q Root-mean-square values Q E = 4πε r2 V

Question

Physics

CAIE2023

A small coil is positioned so that its axis lies along the axis of a large bar magnet, as shown in Fig. 5.1. leads to coil axis of coil and magnet coil Fig. 5.1 The coil has a cross-sectional area of 0.40cm2 and contains 150 turns of wire. The average magnetic flux density B through the coil varies with the distance x between the face of the magnet and the plane of the coil, as shown in Fig. 5.2. Fig. 5.2 © UCLES 2005 9702/04/SPECIMEN PAPER PPPMMMTTT

Question

Physics

CAIE2023

For Examiner’s Use (a) (i) The coil is 5.0 cm from the face of the magnet. Use Fig. 5.2 to determine the magnetic flux density in the coil. magnetic flux density = T (ii) Hence show that the magnetic flux linkage of the coil is 3.0 × 10-4Wb. [3] (b) State Faraday’s law of electromagnetic induction. [2] (c) The coil is moved along the axis of the magnet so that the distance x changes from x = 5.0cm to x = 15.0cm in a time of 0.30s. Calculate (i) the change in flux linkage of the coil, change = Wb [2] (ii) the average e.m.f. induced in the coil. e.m.f. = V [2] (d) State and explain the variation, if any, of the speed of the coil so that the induced e.m.f. remains constant during the movement in (c). [2] © UCLES 2005 9702/04/SPECIMEN PAPER [Turn over PPPMMMTTT For

Question

Physics

Edexcel2023

Faraday’s and Lenz’s laws Electric field strength −d(Nϕ) E = F dt E = Q Root‑mean‑square values Q E = 4πε r2 V

Question

Physics

Edexcel2023

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Question

Physics

Edexcel2023

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Question

Physics

Edexcel2023

RC F = mrω2 In a magnetic field Fields F = BIl sin θ Coulomb’s law F = Bqv sin θ Q Q F = 1 2 4πε r2

Question

Physics

CAIE2022

7 ( b) (cid:36)(cid:86)(cid:82)(cid:79)(cid:72)(cid:81)(cid:82)(cid:76)(cid:71) (cid:75)(cid:68)(cid:86) (cid:68) (cid:70)(cid:82)(cid:76)(cid:79) (cid:38) (cid:82)(cid:73) (cid:90)(cid:76)(cid:85)(cid:72) (cid:90)(cid:82)(cid:88)(cid:81)(cid:71) (cid:87)(cid:76)(cid:74)(cid:75)(cid:87)(cid:79)(cid:92) (cid:68)(cid:69)(cid:82)(cid:88)(cid:87) (cid:76)(cid:87)(cid:86) (cid:70)(cid:72)(cid:81)(cid:87)(cid:85)(cid:72)(cid:15) (cid:68)(cid:86) (cid:86)(cid:75)(cid:82)(cid:90)(cid:81) (cid:76)(cid:81) (cid:41)(cid:76)(cid:74)(cid:17) (cid:26)(cid:17)(cid:20)(cid:17) coil C solenoid + – d.c. supply Fig. 7. 1 (cid:55)(cid:75)(cid:72) (cid:70)(cid:82)(cid:76)(cid:79) (cid:38) (cid:75)(cid:68)(cid:86) (cid:28)(cid:25) (cid:87)(cid:88)(cid:85)(cid:81)(cid:86)(cid:17) (cid:55)(cid:75)(cid:72) (cid:88)(cid:81)(cid:76)(cid:73)(cid:82)(cid:85)(cid:80) (cid:80)(cid:68)(cid:74)(cid:81)(cid:72)(cid:87)(cid:76)(cid:70) (cid:73)(cid:79)(cid:88)(cid:91) Φ(cid:15) (cid:76)(cid:81) (cid:58)(cid:69)(cid:15) (cid:76)(cid:81) (cid:87)(cid:75)(cid:72) (cid:86)(cid:82)(cid:79)(cid:72)(cid:81)(cid:82)(cid:76)(cid:71) (cid:76)(cid:86) (cid:74)(cid:76)(cid:89)(cid:72)(cid:81) (cid:69)(cid:92) (cid:87)(cid:75)(cid:72) (cid:72)(cid:91)(cid:83)(cid:85)(cid:72)(cid:86)(cid:86)(cid:76)(cid:82)(cid:81) Φ = 6 .8 × 10– 6 × I (cid:90)(cid:75)(cid:72)(cid:85)(cid:72) I (cid:76)(cid:86) (cid:87)(cid:75)(cid:72) (cid:70)(cid:88)(cid:85)(cid:85)(cid:72)(cid:81)(cid:87)(cid:15) (cid:76)(cid:81)(cid:36)(cid:15) (cid:76)(cid:81) (cid:87)(cid:75)(cid:72) (cid:86)(cid:82)(cid:79)(cid:72)(cid:81)(cid:82)(cid:76)(cid:71)(cid:17) (cid:38)(cid:68)(cid:79)(cid:70)(cid:88)(cid:79)(cid:68)(cid:87)(cid:72) (cid:87)(cid:75)(cid:72) (cid:68)(cid:89)(cid:72)(cid:85)(cid:68)(cid:74)(cid:72) (cid:72)(cid:79)(cid:72)(cid:70)(cid:87)(cid:85)(cid:82)(cid:80)(cid:82)(cid:87)(cid:76)(cid:89)(cid:72) (cid:73)(cid:82)(cid:85)(cid:70)(cid:72) (cid:11)(cid:72)(cid:17)(cid:80)(cid:17)(cid:73)(cid:17)(cid:12) (cid:76)(cid:81)(cid:71)(cid:88)(cid:70)(cid:72)(cid:71) (cid:76)(cid:81) (cid:70)(cid:82)(cid:76)(cid:79) (cid:38) (cid:90)(cid:75)(cid:72)(cid:81) (cid:68) (cid:70)(cid:88)(cid:85)(cid:85)(cid:72)(cid:81)(cid:87) (cid:82)(cid:73) (cid:22)(cid:17)(cid:24)(cid:3031)(cid:36)(cid:76)(cid:86) (cid:85)(cid:72)(cid:89)(cid:72)(cid:85)(cid:86)(cid:72)(cid:71) (cid:76)(cid:81) (cid:87)(cid:75)(cid:72) (cid:86)(cid:82)(cid:79)(cid:72)(cid:81)(cid:82)(cid:76)(cid:71) (cid:76)(cid:81) (cid:68) (cid:87)(cid:76)(cid:80)(cid:72) (cid:82)(cid:73) (cid:21)(cid:17)(cid:23)(cid:3031)(cid:80)(cid:86)(cid:17) (cid:72)(cid:17)(cid:80)(cid:17)(cid:73)(cid:17) (cid:32) .......................................................(cid:3031)(cid:57) (cid:62)(cid:21)(cid:64) ( c ) (cid:55)(cid:75)(cid:72) (cid:71)(cid:17)(cid:70)(cid:17) (cid:86)(cid:88)(cid:83)(cid:83)(cid:79)(cid:92) (cid:76)(cid:81) (cid:41)(cid:76)(cid:74)(cid:17) (cid:26)(cid:17)(cid:20) (cid:76)(cid:86) (cid:81)(cid:82)(cid:90) (cid:85)(cid:72)(cid:83)(cid:79)(cid:68)(cid:70)(cid:72)(cid:71) (cid:90)(cid:76)(cid:87)(cid:75) (cid:68) (cid:86)(cid:76)(cid:81)(cid:88)(cid:86)(cid:82)(cid:76)(cid:71)(cid:68)(cid:79) (cid:68)(cid:79)(cid:87)(cid:72)(cid:85)(cid:81)(cid:68)(cid:87)(cid:76)(cid:81)(cid:74) (cid:86)(cid:88)(cid:83)(cid:83)(cid:79)(cid:92)(cid:17) (cid:39)(cid:72)(cid:86)(cid:70)(cid:85)(cid:76)(cid:69)(cid:72) (cid:84)(cid:88)(cid:68)(cid:79)(cid:76)(cid:87)(cid:68)(cid:87)(cid:76)(cid:89)(cid:72)(cid:79)(cid:92) (cid:87)(cid:75)(cid:72) (cid:72)(cid:17)(cid:80)(cid:17)(cid:73)(cid:17) (cid:87)(cid:75)(cid:68)(cid:87) (cid:76)(cid:86) (cid:81)(cid:82)(cid:90) (cid:76)(cid:81)(cid:71)(cid:88)(cid:70)(cid:72)(cid:71) (cid:76)(cid:81) (cid:70)(cid:82)(cid:76)(cid:79) (cid:38)(cid:17) ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] [Total: 8 ] © UCLES 2019 97 02/04/SP/22 [Turn over PMT

Question

Physics

CAIE2022

Qq (cid:72)(cid:79)(cid:72)(cid:70)(cid:87)(cid:85)(cid:76)(cid:70)(cid:68)(cid:79) (cid:83)(cid:82)(cid:87)(cid:72)(cid:81)(cid:87)(cid:76)(cid:68)(cid:79) (cid:72)(cid:81)(cid:72)(cid:85)(cid:74)(cid:92) E = P 4rf r

Question

Physics

CAIE2022

(cid:36)(cid:69)(cid:68)(cid:85) (cid:80)(cid:68)(cid:74)(cid:81)(cid:72)(cid:87) (cid:82)(cid:73) (cid:80)(cid:68)(cid:86)(cid:86) (cid:21)(cid:24)(cid:19)(cid:3031)(cid:74) (cid:76)(cid:86) (cid:86)(cid:88)(cid:86)(cid:83)(cid:72)(cid:81)(cid:71)(cid:72)(cid:71) (cid:73)(cid:85)(cid:82)(cid:80) (cid:87)(cid:75)(cid:72) (cid:73)(cid:85)(cid:72)(cid:72) (cid:72)(cid:81)(cid:71) (cid:82)(cid:73) (cid:68) (cid:86)(cid:83)(cid:85)(cid:76)(cid:81)(cid:74)(cid:15) (cid:68)(cid:86) (cid:76)(cid:79)(cid:79)(cid:88)(cid:86)(cid:87)(cid:85)(cid:68)(cid:87)(cid:72)(cid:71) (cid:76)(cid:81) (cid:41)(cid:76)(cid:74)(cid:17) (cid:22)(cid:17)(cid:20)(cid:17) spring magnet coil Fig. 3 . 1 (cid:55)(cid:75)(cid:72) (cid:80)(cid:68)(cid:74)(cid:81)(cid:72)(cid:87) (cid:75)(cid:68)(cid:81)(cid:74)(cid:86) (cid:86)(cid:82) (cid:87)(cid:75)(cid:68)(cid:87) (cid:82)(cid:81)(cid:72) (cid:83)(cid:82)(cid:79)(cid:72) (cid:76)(cid:86) (cid:81)(cid:72)(cid:68)(cid:85) (cid:87)(cid:75)(cid:72) (cid:70)(cid:72)(cid:81)(cid:87)(cid:85)(cid:72) (cid:82)(cid:73) (cid:68) (cid:70)(cid:82)(cid:76)(cid:79) (cid:82)(cid:73) (cid:90)(cid:76)(cid:85)(cid:72)(cid:17) (cid:55)(cid:75)(cid:72) (cid:70)(cid:82)(cid:76)(cid:79) (cid:76)(cid:86) (cid:70)(cid:82)(cid:81)(cid:81)(cid:72)(cid:70)(cid:87)(cid:72)(cid:71) (cid:76)(cid:81) (cid:86)(cid:72)(cid:85)(cid:76)(cid:72)(cid:86) (cid:90)(cid:76)(cid:87)(cid:75) (cid:68) (cid:85)(cid:72)(cid:86)(cid:76)(cid:86)(cid:87)(cid:82)(cid:85) (cid:68)(cid:81)(cid:71) (cid:68) (cid:86)(cid:90)(cid:76)(cid:87)(cid:70)(cid:75)(cid:17)(cid:55)(cid:75)(cid:72) (cid:86)(cid:90)(cid:76)(cid:87)(cid:70)(cid:75) (cid:76)(cid:86) (cid:82)(cid:83)(cid:72)(cid:81)(cid:17) (cid:55)(cid:75)(cid:72) (cid:80)(cid:68)(cid:74)(cid:81)(cid:72)(cid:87) (cid:76)(cid:86) (cid:71)(cid:76)(cid:86)(cid:83)(cid:79)(cid:68)(cid:70)(cid:72)(cid:71) (cid:89)(cid:72)(cid:85)(cid:87)(cid:76)(cid:70)(cid:68)(cid:79)(cid:79)(cid:92) (cid:68)(cid:81)(cid:71) (cid:87)(cid:75)(cid:72)(cid:81) (cid:68)(cid:79)(cid:79)(cid:82)(cid:90)(cid:72)(cid:71) (cid:87)(cid:82) (cid:82)(cid:86)(cid:70)(cid:76)(cid:79)(cid:79)(cid:68)(cid:87)(cid:72)(cid:17) (cid:36)(cid:87) (cid:87)(cid:76)(cid:80)(cid:72) t (cid:32) (cid:19)(cid:15) (cid:87)(cid:75)(cid:72) (cid:80)(cid:68)(cid:74)(cid:81)(cid:72)(cid:87) (cid:76)(cid:86) (cid:82)(cid:86)(cid:70)(cid:76)(cid:79)(cid:79)(cid:68)(cid:87)(cid:76)(cid:81)(cid:74) (cid:73)(cid:85)(cid:72)(cid:72)(cid:79)(cid:92)(cid:17)(cid:36)(cid:87) (cid:87)(cid:76)(cid:80)(cid:72) t (cid:32) (cid:25)(cid:17)(cid:19)(cid:3031)(cid:86)(cid:15) (cid:87)(cid:75)(cid:72) (cid:86)(cid:90)(cid:76)(cid:87)(cid:70)(cid:75) (cid:76)(cid:81) (cid:87)(cid:75)(cid:72) (cid:70)(cid:76)(cid:85)(cid:70)(cid:88)(cid:76)(cid:87) (cid:76)(cid:86) (cid:70)(cid:79)(cid:82)(cid:86)(cid:72)(cid:71)(cid:17) (cid:55)(cid:75)(cid:72) (cid:89)(cid:68)(cid:85)(cid:76)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81) (cid:90)(cid:76)(cid:87)(cid:75) (cid:87)(cid:76)(cid:80)(cid:72) t (cid:82)(cid:73) (cid:87)(cid:75)(cid:72) (cid:89)(cid:72)(cid:85)(cid:87)(cid:76)(cid:70)(cid:68)(cid:79) (cid:71)(cid:76)(cid:86)(cid:83)(cid:79)(cid:68)(cid:70)(cid:72)(cid:80)(cid:72)(cid:81)(cid:87) y (cid:82)(cid:73) (cid:87)(cid:75)(cid:72) (cid:80)(cid:68)(cid:74)(cid:81)(cid:72)(cid:87) (cid:76)(cid:86) (cid:86)(cid:75)(cid:82)(cid:90)(cid:81) (cid:76)(cid:81) (cid:41)(cid:76)(cid:74)(cid:17) (cid:22)(cid:17)(cid:21)(cid:17)

Question

Physics

CAIE2022

(cid:36)(cid:87)(cid:75)(cid:76)(cid:81) (cid:86)(cid:79)(cid:76)(cid:70)(cid:72) (cid:82)(cid:73) (cid:70)(cid:82)(cid:81)(cid:71)(cid:88)(cid:70)(cid:87)(cid:76)(cid:81)(cid:74) (cid:80)(cid:68)(cid:87)(cid:72)(cid:85)(cid:76)(cid:68)(cid:79) (cid:75)(cid:68)(cid:86) (cid:76)(cid:87)(cid:86) (cid:73)(cid:68)(cid:70)(cid:72)(cid:86) (cid:51)(cid:52)(cid:53)(cid:54) (cid:68)(cid:81)(cid:71) (cid:57)(cid:3032)(cid:58)(cid:59)(cid:60) (cid:81)(cid:82)(cid:85)(cid:80)(cid:68)(cid:79) (cid:87)(cid:82) (cid:68) (cid:88)(cid:81)(cid:76)(cid:73)(cid:82)(cid:85)(cid:80) (cid:80)(cid:68)(cid:74)(cid:81)(cid:72)(cid:87)(cid:76)(cid:70) (cid:73)(cid:76)(cid:72)(cid:79)(cid:71) (cid:82)(cid:73) (cid:73)(cid:79)(cid:88)(cid:91) (cid:71)(cid:72)(cid:81)(cid:86)(cid:76)(cid:87)(cid:92) B(cid:15) (cid:68)(cid:86) (cid:86)(cid:75)(cid:82)(cid:90)(cid:81) (cid:76)(cid:81) (cid:41)(cid:76)(cid:74)(cid:17) (cid:25)(cid:17)(cid:20)(cid:17) magnetic field flux density B Q R W X direction of motion of electrons P S V Y Fig. 6. 1 (cid:40)(cid:79)(cid:72)(cid:70)(cid:87)(cid:85)(cid:82)(cid:81)(cid:86) (cid:72)(cid:81)(cid:87)(cid:72)(cid:85) (cid:87)(cid:75)(cid:72) (cid:86)(cid:79)(cid:76)(cid:70)(cid:72) (cid:68)(cid:87) (cid:85)(cid:76)(cid:74)(cid:75)(cid:87)(cid:16)(cid:68)(cid:81)(cid:74)(cid:79)(cid:72)(cid:86) (cid:87)(cid:82) (cid:73)(cid:68)(cid:70)(cid:72) (cid:54)(cid:53)(cid:59)(cid:60)(cid:17) (cid:36)(cid:83)(cid:82)(cid:87)(cid:72)(cid:81)(cid:87)(cid:76)(cid:68)(cid:79) (cid:71)(cid:76)(cid:73)(cid:73)(cid:72)(cid:85)(cid:72)(cid:81)(cid:70)(cid:72)(cid:15) (cid:87)(cid:75)(cid:72) (cid:43)(cid:68)(cid:79)(cid:79) (cid:89)(cid:82)(cid:79)(cid:87)(cid:68)(cid:74)(cid:72) V (cid:15) (cid:76)(cid:86) (cid:83)(cid:85)(cid:82)(cid:71)(cid:88)(cid:70)(cid:72)(cid:71) (cid:69)(cid:72)(cid:87)(cid:90)(cid:72)(cid:72)(cid:81) (cid:87)(cid:90)(cid:82) (cid:73)(cid:68)(cid:70)(cid:72)(cid:86) (cid:82)(cid:73) (cid:87)(cid:75)(cid:72) (cid:86)(cid:79)(cid:76)(cid:70)(cid:72)(cid:17) H ( a) ( i) (cid:56)(cid:86)(cid:72) (cid:79)(cid:72)(cid:87)(cid:87)(cid:72)(cid:85)(cid:86) (cid:73)(cid:85)(cid:82)(cid:80) (cid:41)(cid:76)(cid:74)(cid:17) (cid:25)(cid:17)(cid:20) (cid:87)(cid:82) (cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:76)(cid:73)(cid:92) (cid:87)(cid:75)(cid:72) (cid:87)(cid:90)(cid:82) (cid:73)(cid:68)(cid:70)(cid:72)(cid:86) (cid:69)(cid:72)(cid:87)(cid:90)(cid:72)(cid:72)(cid:81) (cid:90)(cid:75)(cid:76)(cid:70)(cid:75) (cid:87)(cid:75)(cid:72) (cid:43)(cid:68)(cid:79)(cid:79) (cid:89)(cid:82)(cid:79)(cid:87)(cid:68)(cid:74)(cid:72) (cid:76)(cid:86) (cid:83)(cid:85)(cid:82)(cid:71)(cid:88)(cid:70)(cid:72)(cid:71)(cid:17) (cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17) (cid:68)(cid:81)(cid:71) (cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17)(cid:17) (cid:62)(cid:20)(cid:64) ( ii) (cid:54)(cid:87)(cid:68)(cid:87)(cid:72) (cid:68)(cid:81)(cid:71) (cid:72)(cid:91)(cid:83)(cid:79)(cid:68)(cid:76)(cid:81) (cid:90)(cid:75)(cid:76)(cid:70)(cid:75) (cid:82)(cid:73) (cid:87)(cid:75)(cid:72) (cid:87)(cid:90)(cid:82) (cid:73)(cid:68)(cid:70)(cid:72)(cid:86) (cid:81)(cid:68)(cid:80)(cid:72)(cid:71) (cid:76)(cid:81) ( a) ( i) (cid:76)(cid:86) (cid:87)(cid:75)(cid:72) (cid:80)(cid:82)(cid:85)(cid:72) (cid:83)(cid:82)(cid:86)(cid:76)(cid:87)(cid:76)(cid:89)(cid:72)(cid:17) ........................................................................................................................................... ...................................................................................................................................... [2] ( b) (cid:55)(cid:75)(cid:72) (cid:43)(cid:68)(cid:79)(cid:79) (cid:89)(cid:82)(cid:79)(cid:87)(cid:68)(cid:74)(cid:72) V (cid:76)(cid:86) (cid:74)(cid:76)(cid:89)(cid:72)(cid:81) (cid:69)(cid:92) (cid:87)(cid:75)(cid:72) (cid:72)(cid:91)(cid:83)(cid:85)(cid:72)(cid:86)(cid:86)(cid:76)(cid:82)(cid:81) H BI V = . H ntq ( i) (cid:56)(cid:86)(cid:72) (cid:87)(cid:75)(cid:72) (cid:79)(cid:72)(cid:87)(cid:87)(cid:72)(cid:85)(cid:86) (cid:76)(cid:81) (cid:41)(cid:76)(cid:74)(cid:17) (cid:25)(cid:17)(cid:20) (cid:87)(cid:82) (cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:76)(cid:73)(cid:92) (cid:87)(cid:75)(cid:72) (cid:71)(cid:76)(cid:86)(cid:87)(cid:68)(cid:81)(cid:70)(cid:72) t. ...................................................................................................................................... [1] © UCLES 2019 97 02/04/SP/22 PMT

Question

Physics

CAIE2022

5 ( ii) (cid:55)(cid:75)(cid:72)(cid:81)(cid:72)(cid:74)(cid:68)(cid:87)(cid:76)(cid:89)(cid:72)(cid:70)(cid:75)(cid:68)(cid:85)(cid:74)(cid:72)(cid:70)(cid:68)(cid:85)(cid:85)(cid:76)(cid:72)(cid:85)(cid:86)(cid:11)(cid:72)(cid:79)(cid:72)(cid:70)(cid:87)(cid:85)(cid:82)(cid:81)(cid:86)(cid:12)(cid:68)(cid:85)(cid:72)(cid:85)(cid:72)(cid:83)(cid:79)(cid:68)(cid:70)(cid:72)(cid:71)(cid:69)(cid:92)(cid:83)(cid:82)(cid:86)(cid:76)(cid:87)(cid:76)(cid:89)(cid:72)(cid:70)(cid:75)(cid:68)(cid:85)(cid:74)(cid:72)(cid:70)(cid:68)(cid:85)(cid:85)(cid:76)(cid:72)(cid:85)(cid:86)(cid:80)(cid:82)(cid:89)(cid:76)(cid:81)(cid:74) (cid:76)(cid:81) (cid:87)(cid:75)(cid:72) (cid:86)(cid:68)(cid:80)(cid:72) (cid:71)(cid:76)(cid:85)(cid:72)(cid:70)(cid:87)(cid:76)(cid:82)(cid:81) (cid:87)(cid:82)(cid:90)(cid:68)(cid:85)(cid:71)(cid:86) (cid:87)(cid:75)(cid:72) (cid:86)(cid:79)(cid:76)(cid:70)(cid:72)(cid:17) (cid:54)(cid:87)(cid:68)(cid:87)(cid:72) (cid:68)(cid:81)(cid:71) (cid:72)(cid:91)(cid:83)(cid:79)(cid:68)(cid:76)(cid:81) (cid:87)(cid:75)(cid:72) (cid:72)(cid:73)(cid:73)(cid:72)(cid:70)(cid:87)(cid:15) (cid:76)(cid:73) (cid:68)(cid:81)(cid:92)(cid:15) (cid:82)(cid:73) (cid:87)(cid:75)(cid:76)(cid:86) (cid:70)(cid:75)(cid:68)(cid:81)(cid:74)(cid:72) (cid:82)(cid:81) (cid:87)(cid:75)(cid:72) (cid:83)(cid:82)(cid:79)(cid:68)(cid:85)(cid:76)(cid:87)(cid:92) (cid:82)(cid:73) (cid:87)(cid:75)(cid:72) (cid:43)(cid:68)(cid:79)(cid:79) (cid:89)(cid:82)(cid:79)(cid:87)(cid:68)(cid:74)(cid:72)(cid:17) ........................................................................................................................................... ........................................................................................................................................... ...................................................................................................................................... [2] [Total: 6 ] © UCLES 2019 97 02/04/SP/22 [Turn over PMT

Question

Physics

Edexcel2022

The screen is viewed by an observer at point X in the diagram above. A magnetic field is directed at the beam of electrons. This causes the shadow to move upwards on the screen in the direction OM. M O Q N P In which of the following directions is the magnetic field acting as seen by this observer? A OM B ON C OP D OQ (Total for Question 5 = 1 mark) 

Question

Physics

Edexcel2022

× 1.6 × 10 −19 × 197 × 1.6 × 10 −19 B r =

Question

Physics

Edexcel2022

A device called a clutch can be used to connect a motor to a load. The diagram shows a design called an eddy current clutch. copper disc Side view plastic disc load magnet motor magnet motor plastic disc copper disc Several magnets are embedded in the plastic disc and it is rotated by the motor. (a) (i) Explain why a current is induced in the copper disc when the motor is switched on. (2) ................................................................................................................................................................................................................................................... ................................................................................................................................................................................................................................................... ................................................................................................................................................................................................................................................... ................................................................................................................................................................................................................................................... (ii) Explain, using Lenz’s law, why the copper disc rotates. (3) ................................................................................................................................................................................................................................................... ................................................................................................................................................................................................................................................... ................................................................................................................................................................................................................................................... ................................................................................................................................................................................................................................................... ................................................................................................................................................................................................................................................... ................................................................................................................................................................................................................................................... 

Question

Physics

Edexcel2022

RC F = mrω2 In a magnetic field Fields F = BIl sin θ Coulomb’s law F = Bqv sin θ Q Q F = 1 2 4πε r2

Question

Physics

Edexcel2022

Faraday’s and Lenz’s laws Electric field strength −d(Nϕ) E = F dt E = Q Root‑mean‑square values Q E = 4πε r2 V

Question

Physics

CAIE2022

( a) ( i) (cid:39)(cid:72)(cid:73)(cid:76)(cid:81)(cid:72) (cid:80)(cid:68)(cid:74)(cid:81)(cid:72)(cid:87)(cid:76)(cid:70) (cid:73)(cid:79)(cid:88)(cid:91)(cid:17) ........................................................................................................................................... ........................................................................................................................................... ...................................................................................................................................... [2] ( ii) (cid:54)(cid:87)(cid:68)(cid:87)(cid:72) (cid:41)(cid:68)(cid:85)(cid:68)(cid:71)(cid:68)(cid:92)(cid:182)(cid:86) (cid:79)(cid:68)(cid:90) (cid:82)(cid:73) (cid:72)(cid:79)(cid:72)(cid:70)(cid:87)(cid:85)(cid:82)(cid:80)(cid:68)(cid:74)(cid:81)(cid:72)(cid:87)(cid:76)(cid:70) (cid:76)(cid:81)(cid:71)(cid:88)(cid:70)(cid:87)(cid:76)(cid:82)(cid:81)(cid:17) ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ...................................................................................................................................... [2] © UCLES 2019 97 02/04/SP/22 PMT

Question

Physics

Edexcel2021

Which of the following is a unit of magnetic flux? A N C−1 B T m−2 C V s D Wb m2 (Total for Question 10 = 1 mark)

Question

Physics

Edexcel2021

Impulse W = QV

Question

Physics

Edexcel2021

*P67096A02532* Turn over PMT (ii) Show that the moment M on the coil about the pivot, due to the magnetic field, is given by M = BAIN where A is the cross-sectional area of the coil N is the number of turns of wire on the coil. (4) .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. ..................................................................................................................................................................................................................................................

Question

Physics

Edexcel2021

*P67096A02732* PMT (c) The coil within a very sensitive moving coil ammeter can be damaged when the ammeter is transported. The two ends of the coil are connected together when the ammeter is transported. This reduces the movement of the coil and makes it less likely to be damaged. A student suggests that this is due to Faraday’s law and Lenz’s law. Explain how these laws apply to this situation. (4) .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. (Total for Question 17 = 13 marks) TOTAL FOR PAPER = 90 MARKS

Question

Physics

Edexcel2021

RC F = mrω2 In a magnetic field Fields F = BIl sin θ Coulomb’s law F = Bqv sin θ Q Q F = 1 2 4πε r2

Question

Physics

Edexcel2021

Faraday’s and Lenz’s laws Electric field strength −d(Nϕ) E = F dt E = Q Root-mean-square values Q E = 4πε r2 V

Question

Physics

Edexcel2021

The diagrams show the plan view and side view of a moving coil ammeter. Plan view Side view scale coil I B pointer soft iron cylinder soft iron pivot N l S cylinder B w N S pivot magnet magnet moving coil The fixed soft iron cylinder and magnets produce a uniform magnetic field of magnetic flux density B. The coil is able to rotate within this magnetic field. The coil has width w and length l. There is a current I in the coil in the direction shown in the side view diagram. (a) (i) Explain which way the coil will rotate. (2) .................................................................................................................................................................................................................................................. ..................................................................................................................................................................................................................................................

Question

Physics

Edexcel2020

Faraday’s and Lenz’s laws Electric field strength −d(Nϕ) E = F dt E = Q Root-mean-square values Q E = 4πε r2 V

Question

Physics

Edexcel2020

RC F = mrω2 In a magnetic field Fields F = BIl sin θ Coulomb’s law F = Bqv sin θ Q Q F = 1 2 4πε r2

Question

Physics

Edexcel2020

Hybrid electric vehicles (HEV) use the same device both as a generator to charge the car battery and as an electric motor to support the propulsion system. A simplified diagram of the device is shown. The coil can rotate freely around the axis. coil magnet magnet S N axis *(a) Describe how the device can be used as both a generator and an electric motor. (6) .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. ..................................................................................................................................................................................................................................................

Question

Physics

CAIE2016

A charged particle passes through a region of uniform magnetic fi eld of fl ux density 0.74 T, as shown in Fig. 9.1. region of uniform magnetic field path of charged particle Fig. 9.1 The radius r of the path of the particle in the magnetic fi eld is 23 cm. (a) The particle is positively charged. State the direction of the magnetic fi eld. .............................................................................................................................................. [1] q (b) (i) Show that the specifi c charge of the particle (the ratio of its charge to its mass) is m given by the expression q v = m rB where v is the speed of the particle and B is the magnetic fl ux density of the fi eld. [2] (ii) The speed v of the particle is 8.2 × 106 m s−1. Calculate the specifi c charge of the particle. specifi c charge = ............................................... C kg−1 [2] [Total: 5] © UCLES 2014 9702/04/SP/16 [Turn over PPMMTT

Question

Physics

CAIE2016

A small coil is positioned so that its axis lies along the axis of a large bar magnet, as shown in Fig. 8.1. leads to coil pole of axis of coil magnet and magnet x coil Fig. 8.1 The coil has a cross-sectional area of 0.40 cm2 and contains 150 turns of wire. The average magnetic fl ux density B through the coil varies with the distance x between the face of the magnet and the plane of the coil, as shown in Fig. 8.2.

Question

Physics

CAIE2016

2 BI Hall voltage V = H ntq alternating current/voltage x = x sin (cid:90)(cid:3)(cid:3)t

Question

Physics

CAIE2016

permittivity of free space (cid:72) = 8.85 (cid:117) 10–12 Fm–1

Question

Physics

CAIE2016

Data speed of light in free space c = 3.00 (cid:117) 108 ms–1 permeability of free space (cid:80) = 4(cid:83) (cid:117) 10–7 Hm–1

Question

Physics

CAIE2016

(a) (i) The coil is 5.0 cm from the face of the magnet. Use Fig. 8.2 to determine the magnetic fl ux density in the coil. magnetic fl ux density = ....................................................... T [1] (ii) Hence show that the magnetic fl ux linkage of the coil is 3.0 × 10−4 Wb. [2] (b) State Faraday’s law of electromagnetic induction. ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] (c) The coil is moved along the axis of the magnet so that the distance x changes from x = 5.0 cm to x = 15.0 cm in a time of 0.30 s. Calculate (i) the change in fl ux linkage of the coil, change = ................................................... Wb [2] (ii) the average e.m.f. induced in the coil. e.m.f. = ............................…………………. V [2] © UCLES 2014 9702/04/SP/16 [Turn over PPMMTT

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