Physics, 13.03.2021 05:30, 1940swannabe

What is the difference between a bar magnet and an electromagnet? (check all that are true)
A . A bar magnet is a permanent magnet that will keep its magnetism for a long time
B . An electromagnet is always stronger than a bar magnet.
C . A bar magnet will only stay a magnet if it is in contact with something metal.
D . An electromagnet is a temporary magnet that is only magnetic when electricity is flowing through the wire.

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What is the difference between a bar magnet and an electromagnet? (check all that are true)
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