8) explain Electromagnet ?
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Explanation:
The temporary magnet produced by electricity is called an electromagnet. Uses - They are used in telephones , telegraphs, electric motors, electric bells etc. Powerful electromagnets are used in cranes. Bullet trains use the principle of electromagnetism.
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Answer:
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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