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.

Question

Physics

Sandra Grimes

29 September, 08:33

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.

+3

Answers (2)

Know the Answer?

Tony Mcguire · Answer 1

Tony Mcguire 29 September, 09:47

0

it's c. I did the test

Jase Wang · Answer 2

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