Question

Explain the working of electric bell.

Answer 1

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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Answer 2

its totally works because of a property of metals that is they are sonorous and produces sound.
when a metal plate hits other one due to flow of electric current causes bell to ring