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Magnetic fields (A-level only)

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Question 1

A square search coil with a side length of 5.0 cm5.0\text{ cm}5.0 cm contains 800 turns800\text{ turns}800 turns of wire. The coil is integrated into a turbine shaft rotating at a constant speed of 3600 revolutions per minute (rpm)3600\text{ revolutions per minute (rpm)}3600 revolutions per minute (rpm) in a diagnostics laboratory. The axis of rotation of the coil is perpendicular to a uniform magnetic field of magnetic flux density 0.35 T0.35\text{ T}0.35 T and lies in the plane of the coil.

What is the maximum alternating electromotive force (emf) induced in this coil?

A

42 V42\text{ V}42 V

B

132 V132\text{ V}132 V

C

264 V264\text{ V}264 V

D

528 V528\text{ V}528 V

Markscheme

Magnetic fields (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Magnetic fields (A-level only)

66 exam-style questions on AQA A Level Physics Magnetic fields (A-level only), covering Magnetic flux density (A-level only), Moving charges in a magnetic field (A-level only), Magnetic flux and flux linkage (A-level only), Electromagnetic induction (A-level only), Alternating currents (A-level only), and The operation of a transformer (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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