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प्रश्न
State three differences between the temporary and permanent magnets.
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उत्तर
Temporary magnet
- It is made up of soft iron.
- The magnet which loses its magnetism as soon as magnetising force is removed away from it.
- Because of its weak power, it is not used to make the iron pieces into the magnet.
Permanent magnets
- It is made up of steel, cobalt, and nickel.
- The magnet, which does not lose its magnetic properties easily is called a permanent magnet.
- It can convert an ordinary piece of iron into a temporary magnet.
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