Answers

2015-11-11T20:01:35+08:00
The phenomenon by which an emf or current is induced in a conductor  due to change in the magnetic field near the conductor.
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2015-11-11T20:13:44+08:00
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. Electromagnets usually consist of a large number of closely spaced turns of wire that create the magnetic field.
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