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Q.

Which of the following is a temporary magnet?

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a

Disc magnet

b

Horseshoe magnet

c

Electromagnet

d

Bar magnet

answer is C.

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Detailed Solution

  • Bar magnets, disc magnets and horseshoe magnets are permanent magnets having different shapes.
  • An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Hence, it loses its magnetism as soon as the electric current is switched off.

Therefore, an electric magnet is a temporary magnet.

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Which of the following is a temporary magnet?