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Question

Working of electric bells is an example of

A
Mechanical effect of electric current
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B
Heating effect of electric current
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C
Magnetic effect of electric current
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D
None of these
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Solution

The correct option is C Magnetic effect of electric current
An electric bell contains an electromagnet, consisting of coils of insulated wire wound round iron rods. When an electric current flows through the coils, the rods become magnetic and attract a piece of iron attached to a clapper. The clapper hits the bell and makes it ring.

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