A student wants to build a simple, working electromagnet. The teacher provides the following list of equipment:
Which combination of equipment must be used?
ammeter, permanent bar magnet, and voltmeter
battery, insulated copper wire, and soft iron nail
permanent bar magnet, soft iron nail, and voltmeter
battery, ammeter, and permanent bar magnet
30 exam-style questions on CIE IGCSE Physics 4.5.3a Magnetic effect of a current and its applications. Each one has a worked solution and a mark scheme showing where the marks go.