What happens when you push the button of a doorbell? the electromagnet becomes stronger. the current going through the doorbell rapidly switches directions. the switch is closed, completing the circuit.

The correct answer is "The switch is closed, completing the circuit".

Explanation:

Electromagnet: It is a temporary magnet. When the iron rod is wounded by the coils and the current is passed through it then it becomes magnetized and behave like a temporary magnet as long as the current flows through it.

When you push the button of a doorbell then the circuit completes and the current starts flowing through the circuit. The electromagnet is activated.

It causes a buzzer to go off.  The hammer strikes the bars which creates sound.

Therefore, the correct answer is "The switch is closed, completing the circuit".

The switch is closed, completing the circuit

Explanation:

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