Question

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WHAT DO YOU MEAN BY ELECTROMAGNET?
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Answer 1

a core of magnetic material (such as iron) surrounded by a coil of wire through which an electric current is passed to magnetize the core

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Answer 2

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Electromagnets:-

The magnet which can be easily magnetized by passing current and easily demagnetized by switching current is known as electromagnet.

Also known as temporary magnet.

It is made by using Alnico and Nipermag.

It's power can be enhanced many times by increasing current.

some uses:-

use in solenoid.

used in motor.

used in MRI