In Electric Bells, a coil is wounded on an Iron core.
When current passes through this coil, the Iron core will act as an Electro Magnet.
It will attract the spring loaded Arm with a clapper on its end to the Bell.
You can see the animation below.
B- Bell, E-Electro Magnet, K-Switch, U-Power Source, A-Clapper Arm, T-Electric Contact
Courtesy: http://en.wikipedia.org/
When current passes through this coil, the Iron core will act as an Electro Magnet.
It will attract the spring loaded Arm with a clapper on its end to the Bell.
You can see the animation below.
B- Bell, E-Electro Magnet, K-Switch, U-Power Source, A-Clapper Arm, T-Electric Contact
 |
| Electric Bell |
Courtesy: http://en.wikipedia.org/
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