What sequence of action happens when the striker in bell moves towards the electromagnet?

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The electric circuit breaks

The electromagnet demagnetises

All of the given options

The iron piece moves back to the original position

answer is D.

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Detailed Solution

When the switch is pressed, the circuit produces current.
The electromagnet is powered and generates a magnetic field that attracts the iron strip towards it.
The gong is struck by the striker (bell). The contact is broken and the circuit's electricity is cut off when the striking arm strikes the gong. The electromagnet loses its magnetic field

The striker is brought back to its initial resting position by the linked spring arm. When the contact is reestablished, the circuit is conducting current (provided the main switch is still pressed). Repetition of the procedure starts again

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