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What is the difference between an electromagnet and a permanent magnet 2024?
permanent magnet electromagnet permanent magnet
Questioner：Harper Collins 2023-04-20 01:01:01
The most authoritative answer in 2024
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Isabella Garcia——Studied at the University of British Columbia, Lives in Vancouver, Canada.
A permanent magnet is made from a "hard" magnetic material that maintains its magnetism over long periods of time. The magnetism in an electromagnet is created by current running through a coil of insulated wire that is wound around a piece of "soft" magnetic material.read more >>+119962023-04-22 01:01:01
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