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Simple phenomena of magnetism

Simple phenomena of magnetism

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Question 127

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

A

Stroking it repeatedly in one direction with the north pole of a magnet.

B

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

C

Protecting it from external magnetic fields by storing it with iron keepers.

D

Placing it inside a solenoid connected to a direct current (d.c.) supply and gradually increasing the current.

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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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