A coil of wire placed above a magnet is released. As the coil moves downward over the magnet, an e.m.f. is induced across the coil. Which factor does not influence the magnitude of the e.m.f. induced across the coil?
- Achanging the number of turns of wire in the coil
- Bchanging the height $h$ from which the coil is dropped
- Cchanging the direction of the magnet, so the north pole is at the bottom
- Dchanging the strength of the magnetic field from the magnet