Question

chapter 23 \electricity and magnetism\ test
when you press a door - bell button, you complete a circuit. that would be the first (1st) step, which would be the last step?
a spring pushes the iron - piece and hammer back into place.
the cycle begins again.
the electromagnet attracts an iron - piece attached to a hammer.
the moving hammer strikes the bell.

Explanation:

When a door - bell button is pressed to complete a circuit, current flows through an electromagnet. The electromagnet attracts an iron piece attached to a hammer. The hammer strikes the bell. After the strike, a spring pulls the iron piece and hammer back into place. Then the cycle can begin again if the button is pressed again. So the last step in the sequence is that the cycle begins again.

Answer:

The cycle begins again.