In an electromagnet, are the objects held by iron released, when the current is switched off?
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Explanation:
Only iron is used for making electromagnets. This is because when current is switched off in the coil of an electromagnet made of iron piece, then the iron piece loses all its magnetism. ... The steel piece retains the magnetism and becomes a permanent magnet.
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Answer:
Only iron is used for making electromagnets. This is because when current is switched off in the coil of an electromagnet made of iron piece, then the iron piece loses all its magnetism. ... The steel piece retains the magnetism and becomes a permanent magnet.
Explanation:
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