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.

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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smecloudbird18 smecloudbird18 · Answer 2 · 2022-06-28T13:44:27+02:00

Electromagnet different from a bar magnet in such a way that c) Electromagnets are only magnetized when a current flows through a wire wrapped around the core.

What is an electromagnet ?

An electromagnet is a soft iron piece converted into a magnet when a current is passed in the wound around the iron piece .

Electromagnet is a temporary magnet , only get magnetized in the presence of current , it will get demagnetized if current passing through it get removed .

hence , correct answer is option c) Electromagnets are only magnetized when a current flows through a wire wrapped around the core.

learn more about electromagnet

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