Asked by sonali221994 | 27th Jan, 2010, 03:24: PM
An electromagnet is a type of magnet whose magnetic field is produced by the flow of electric current. The magnetic field disappears when the current flow stops.
It is used in electric motors and generators,
In Electric Relays.
In Electric Bells,
Answered by | 27th Jan, 2010, 05:22: PM
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