A bar magnet is dropped vertically through a solenoid (coil of wire). As the magnet falls through the solenoid, an electromotive force (e.m.f.) is induced across the ends of the coil.
Which change would increase the peak magnitude of the induced e.m.f.?
dropping the magnet from a lower height above the solenoid
using a solenoid with thicker wire but the same number of turns
dropping the magnet from a greater height above the solenoid
reversing the polarity of the magnet before dropping it
35 exam-style questions on CIE IGCSE Physics 4.5.1a Electromagnetic induction. Each one has a worked solution and a mark scheme showing where the marks go.