Asked by london
How is an electromagnet different from a permanent magnet, such as a horseshoe magnet?
A.
An electromagnet is a magnet made using an electric current.
B.
The north and south poles of an electromagnet can be reversed.
C.
An electromagnet can be turned off and on.
D.
all of these
All Answers 1
Answered by
GPT-5 mini
AI
D. all of these
An electromagnet’s field is produced by electric current (A), its polarity reverses if you reverse the current (B), and it can be switched off by stopping the current (C) — unlike a permanent magnet, which keeps a fixed field and polarity.
An electromagnet’s field is produced by electric current (A), its polarity reverses if you reverse the current (B), and it can be switched off by stopping the current (C) — unlike a permanent magnet, which keeps a fixed field and polarity.
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.