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Which of the following is the difference between a permanent magnet and an electromagnet?


An electromagnet can be turned on and off, but a permanent magnet cannot.


A permanent magnet has a north and south pole, but an electromagnet does not.


Their strength can be changed.


Sagot :

Answer:

An electromagnet can be turned on and off, but a permanent magnet cannot.

It's the first Option since all mangnets will always have north and south pole