what are permanent magnet and electromagnet? give two uses of each.
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permanent magnet are those which found naturally and have its magnetic force all the time .It is used in speakers and also in some trains.
electromagnetic are those which are man made and they have only magnetic force when a electric current is passed and they are not permanent used in trash centres
electromagnetic are those which are man made and they have only magnetic force when a electric current is passed and they are not permanent used in trash centres
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Answer:
Permanent magnets have constant magnetic fields around it. When a piece of metal like soft iron is placed inside a solenoid and current is passed through it, it gets magnetised. The magnet so formed is called an electromagnet.
Uses. Permanent magnet - Electric generator, loud speaker.
Electromagnet - Cranes, electric bell.
Explanation:
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