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An electromagnets different from a permanent magnets because an electromagnet blank whats the blank?

An electromagnets different from a permanent magnets because an electromagnet blank whats the blank?
asked 171k views
5 votes
An electromagnets different from a permanent magnets because an electromagnet blank

whats the blank?

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User Jamie Curnow
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1 Answer

3 votes
An electromagnet can be turned on or turned off which makes it useful for construction purposes to lift heavy metal objects.
answered
User Trixo
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7.8k points
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