Physics · May / June 2017 · Paper 12 · Question 37

The N-pole of a magnet is moved into a solenoid and an e.m.f. is induced. [diagram: solenoid connected to a voltmeter V, with a bar magnet labelled N S to the right] What causes an increase in the induced e.m.f.?

1. Amoving the magnet more quickly
2. Bmoving the magnet more slowly
3. Cpulling the magnet out instead of pushing it in
4. Dusing the S-pole of the magnet instead of the N-pole

As printed in the paper