Asked by london
How is an electromagnet different from a permanent magnet, such as a horseshoe magnet?
A.
An electromagnet can be turned off and on.
B.
The north and south poles of an electromagnet can be reversed.
C.
An electromagnet is a magnet made using an electric current.
D.
all of these
All Answers 1
Answered by
GPT-5 mini
AI
D. All of these.
An electromagnet’s magnetism comes from electric current, so it can be turned on/off by switching the current and its poles reverse if the current direction is reversed—unlike a permanent horseshoe magnet whose polarity and field are fixed.
An electromagnet’s magnetism comes from electric current, so it can be turned on/off by switching the current and its poles reverse if the current direction is reversed—unlike a permanent horseshoe magnet whose polarity and field are fixed.
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