A student has an unmarked metal bar.
Which test shows that the bar is a permanent magnet and not just a magnetic material?
Showing that one end of the bar repels one pole of a bar magnet
Showing that both ends of the bar attract a pole of a bar magnet
Showing that the bar makes a nearby compass needle move
Showing that the bar conducts a current in a simple circuit
44 exam-style questions on OCR GCSE Physics 4.1 Magnets and magnetic fields, covering 4.1.1 Magnetic poles, attraction and repulsion, 4.1.2 Permanent and induced magnets, 4.1.3 The magnetic field of a magnet, 4.1.4 Compasses and the Earth's magnetic field, 4.1.5 The magnetic field around a current-carrying wire, 4.1.6 Field strength, current and distance, and 4.1.7 Solenoids and electromagnets. Each one has a worked solution and a mark scheme showing where the marks go.