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Simple phenomena of magnetism

Simple phenomena of magnetism

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Question 110

Which of the following methods can be used to demagnetise a permanent bar magnet?

A

Cooling the magnet to a very low temperature in a freezer.

B

Placing the magnet in a solenoid connected to an alternating current (e.g. a.c.) supply and slowly withdrawing it.

C

Placing the magnet in a solenoid connected to a direct current (e.g. d.c.) supply and switching the current off.

D

Stroking the magnet repeatedly in one direction using the north pole of another permanent magnet.

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Simple phenomena of magnetism Questions

  1. IGCSE
  2. /Physics
  3. /Simple phenomena of magnetism

169 exam-style questions on CIE IGCSE Physics Simple phenomena of magnetism, covering Simple phenomena of magnetism. Each one has a worked solution and a mark scheme showing where the marks go.

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