Question

what is electromagnet ???????​

Answer 1

Electromagnet, device consisting of a core of magnetic material surrounded by a coil through which an electric current is passed to magnetize the core. An electromagnet is used wherever controllable magnets are required, as in contrivances in which the magnetic flux is to be varied, reversed, or switched on and off.

Answer 2

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a magnet produced by passing an electric current through a coil wound around a soft iron core is called and electromagnet .