An experimenter investigates electromagnetic induction by moving a bar magnet in and out of a solenoid connected to a voltmeter.
Under which of the following conditions will the voltmeter display the greatest absolute reading (maximum magnitude of induced voltage)?
The magnet is inserted into the solenoid very slowly.
The magnet is held stationary inside the middle of the solenoid.
The magnet is pulled out of the solenoid at high speed.
The magnet is left at rest on the table near the solenoid.
275 exam-style questions on CIE IGCSE Physics 4.5 Electromagnetic effects, covering 4.5.1a Electromagnetic induction, 4.5.1b Direction of an induced e.m.f., 4.5.2 The a.c. generator, 4.5.3a Magnetic effect of a current and its applications, 4.5.3b Strength and direction of the field around wires and solenoids, 4.5.4a Force on a current-carrying conductor, 4.5.4b Force on beams of charged particles, 4.5.5 The d.c. motor, 4.5.6a Construction and operation of a transformer, 4.5.6b Turns ratio and current in a transformer, and 4.5.6c High-voltage transmission of electricity. Each one has a worked solution and a mark scheme showing where the marks go.