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The electric bell

Aug 10, 2014

1.72k likes | 4.66k Vues

bell. The electric bell. striker. springy metal. iron. electromagnet. make and break contact. push switch. click. Coil becomes a magnet -. S. N. ON. Current flows. click. S. N. - and pulls the striker across. but breaks the circuit. click. So the coil is

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The electric bell

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Presentation Transcript

bell The electric bell striker springy metal iron electromagnet make and break contact push switch click
Coil becomes a magnet - S N ON Current flows click
S N - and pulls the striker across but breaks the circuit click
So the coil is no longer a magnet - so the striker springs back completing the circuit again click
S N The process is then repeated until the bell is switched OFF click

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