Physics · May / June 2023 · Paper 12 · Question 32

A coil of wire above a magnet is dropped. As the coil falls over the magnet, an e.m.f. is induced across the coil. What does not affect the magnitude of the e.m.f. induced across the coil?

1. Achanging the number of turns of wire in the coil
2. Bchanging the height h from which the coil is dropped
3. Cchanging the direction of the magnet, so the north pole is at the bottom
4. Dchanging the strength of the magnetic field from the magnet

As printed in the paper