In an electric bell, when the electromagnet pulls the iron strip, it also breaks the circuit. The current through the coil stops flowing. In this case, will the coil remain an electromagnet? How does an electric bell ring then?

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Solution

Working of an electric bell:

The coil is no longer an electromagnet. It no longer attracts the iron strip.
The iron strip comes back to its original position and touches the contact screw again. This completes the circuit. The current flows in the coil and the hammer strikes the gong again. This process is repeated in quick succession.
The hammer strikes the gong every time the circuit is complete.
This is how an electric bell rings. The continuous breaking and completing of the circuit enable the gong to strike the hammer continuously.

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Similar questions

In an electric bell, when the electromagnet pulls the iron strip, it also breaks the circuit. The current through the coil stops flowing. In this case, will the coil remain an electromagnet? How does an electric bell ring then?

An electric bell contains an electromagnet which helps the bell to ring.

Q. The switch of an electric bell is pressed. Now, arrange the following statements using the working of an electric bell.

(i) Electromagnet loses its magnetism and the striker goes back its original position.
(ii) The current flows through the circuit and electromagnet attracts the striker towards it.
(iii) The striker hits the gong and the circuit is broken.

Q. A hammer, a gong and a soft iron strip are all parts of

(a) an electromagnet
(b) an electric bell
(c) an electric fuse
(d) electric circuit

Why is soft iron used as the core of the electromagnet in an electric bell?

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