give two advantages of Electromagnet over permanent magnet and also what type of magnet is used in an electric bell?
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It is temporary so it can be controlled and used in various fields like metal scrap separation.
Its strength can be increased or decreased according to use.
Electromagnet is used in electric bell.
It is temporary so it can be controlled and used in various fields like metal scrap separation.
Its strength can be increased or decreased according to use.
Electromagnet is used in electric bell.
trisha37:
yea
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