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Simple phenomena of magnetism

Simple phenomena of magnetism

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Question 85

Which of the following procedures can be used to demagnetise a permanent steel magnet?

A

Cooling the magnet to extremely low temperatures.

B

Wrapping the magnet in a thick sheet of lead.

C

Placing the magnet inside a solenoid carrying a large alternating current (a.c.) and slowly withdrawing it.

D

Placing the magnet inside a solenoid carrying a large direct current (d.c.).

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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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