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15 June, 16:51

How is an electromagnet different from a bar magnet?

A) Bar magnets have a north and south pole, but electromagnets do not.

Eliminate

B) Electromagnets are strong, permanent magnets, but bar magnets are always weaker.

C) Electromagnets are only magnetized when a current flows through a wire wrapped around the core.

D) Bar magnets are attracted to ferromagnetic substances such as iron. Electromagnets are attracted to all metals.

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Answers (2)
  1. 15 June, 17:04
    0
    it's c. I did the test
  2. 15 June, 17:18
    0
    The answer should be C

    Explanation:

    The reason for that is because electromagnet needs electricity to start attracting anything at all but it's attracting power is also stronger because of it

    Warning: This may or may not be a completely correct answer, hope you compare answer and don't blindly trust my answer
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