How does an Electric Bell Work?
When the switch is pushed closed the circuit is completed
and current flows through the electromagnetic coil.
The iron striker is attracted
to the electromagnet and strikes the bell.
the striker moves towards the
the contact is broken. Electricity stops flowing
through the coil which loses its magnetism.
The spring returns the striker to its original
which makes a new contact and so electricity flows again.
Back to number 1 and the cycle repeats itself. The bell
will continue to ring as long as the switch is held closed.
Links Electromagnetism Search Questions
gcsescience.com Contents Index Quizzes gcsescience.com
Copyright © 2012 Dr. Colin France. All Rights Reserved.