Physics (AS & A Level) · May / June 2025 · Paper 44 · Question 6
9702
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A rectangular coil PQRS of wire is free to rotate about its axis XY, as shown in Fig. 6.1. θ θ θ 1.2 A Q Q R Y S P P X magnetic field magnetic field END VIEW force on PS force on QR Fig. 6.1 (not to scale) The coil has length QR of 5.4 cm, width PQ of 2.5 cm and has 190 turns of wire. The plane of the coil is at an angle θ to a uniform magnetic field of flux density 5.2 × 10–3 T. The axis XY of the coil is normal to the field. The current in the coil is 1.2 A.
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6(a)(i)[3]
6(a)(ii)[2]
6(a)(iii)[3]
6(b)[2]
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