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Simple phenomena of magnetism

Simple phenomena of magnetism

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Question 47

Which action describes a method for demagnetising a magnetised steel bar?

A

Stroke the bar repeatedly in one direction with the same pole of a strong permanent magnet.

B

Place the bar inside a solenoid connected to a direct current (d.c.) supply.

C

Place the bar inside a solenoid connected to an alternating current (a.c.) supply and slowly withdraw it.

D

Place the bar next to a magnet and tap it repeatedly with a hammer.

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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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