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Question

An electric bell works on the .......... effect of a current and uses an ..........

A
Magnetic, Permanent magnet
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B
Heating, Electromagnet
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C
Magnetic, Electromagnet
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D
Heating, Permanent magnet
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Solution

The correct option is B Magnetic, Electromagnet
An electric bell works with the principle of working of electromagnetism. When the switch is pushed on, the circuit gets completed and the current starts flowing through the U-shaped electromagnet which creates a magnetic field in the core. This attracts the iron armature. When the armature moves towards the electromagnet, the hammer strikes the gong and the bell rings.
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