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Simple phenomena of magnetism

Simple phenomena of magnetism

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Question 3

Which method is a correct procedure for demagnetising a permanent steel magnet?

A

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

B

Placing the magnet inside a solenoid connected to a direct current (d.c.) supply and leaving it there.

C

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

D

Wrapping a copper wire around the magnet and connecting the wire to the Earth.

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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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