Question 24
Question 24 of 40
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Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
4. Electricity and magnet...
4.1. Simple magnetism and magnetic...

State the differences between the properties of temporary magnets (made of soft iron) and the properties of permanent magnets (made of steel)

4. Electricity and magnet...
4.5.1. Electromagnetic induction

State that the magnitude of an induced e.m.f. is affected by: (a) the rate of change of the magnetic field or the rate of cutting of magnetic field lines (b) the number of turns in a coil

4. Electricity and magnet...
4.5.5. The d.c. motor

Know that a current-carrying coil in a magnetic field may experience a turning effect and that the turning effect is increased by increasing: (a) the number of turns on the coil (b) the current (c) the strength of the magnetic field