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electric bell

science hwk.

Teenie Wong

on 26 April 2010

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Transcript of electric bell

how does an electric bell work? Firstly, the iron striker is attracted to
the electromagnet and strikes the bell. Then as the striker moves towards the
bell, the contact is broken. Electricity
stops flowing through the coil which
loses its magnetism. Following that the spring returns
the striker to its original position
which makes a new contact and
so electricity flows again. After That it goes back to number 1 and the cycle repeats itself. The bell will continue to ring as long as the switch is held closed.
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