(2) what do you mean by an Electro
magnet?
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An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated in the hole, denoting the centre of the coil.
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A soft iron bar is wounded by wire of a complete circuit and current is passed through the wire. Then the iron bar posses charge and becomes an electromagnet.
It is much stronger than natural magnets.
Explanation:
Hope it helps you buddy :)
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