A student uses a permanent magnet to lift some unmagnetised nails. Some of the nails are iron and others are steel. Fig. 7.1 shows the magnet lifting the nails.
(a(i))[2]
Describe what is meant by the phrase induced magnetism.
(a(ii))[1]
State a difference between a magnetic property of the iron nails and that of the steel nails.
(b(i))[1]
State the voltmeter reading when the wire is stationary between the poles.
(b(ii))[1]
Give a reason for the reading on the voltmeter when the wire is moving in the direction shown in Fig. 7.2.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “nails or magnetic material are magnetised / becomes a magnet” …