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Simple phenomena of magnetism

Simple phenomena of magnetism

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Question 121

Which of the following methods can successfully demagnetise a permanent steel magnet?

A

Cooling the magnet in dry ice for several hours

B

Leaving the magnet inside a coil connected to a direct current (d.c.) power supply

C

Placing the magnet in a coil connected to an alternating current (a.c.) supply and slowly removing it

D

Wrapping the magnet tightly in electrical insulating tape

Markscheme

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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