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Q.

In which of the following devices an electromagnet is used?

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a

Electric bell

b

Electric cell

c

Fuse

d

Battery

answer is B.

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Detailed Solution

An electromagnet is used in electric bells.

  • When an electric current is passed through the circuit of the electric bell, the electromagnet in it attracts an iron strip which is attached to a hammer. 
  •  When the iron strip gets attracted towards the electromagnet, the hammer strikes the gong of the bell to produce the sound of the electric bell.
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Therefore, the electric bell is the correct answer.

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