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How do electromagnets differ from regular magnets? a) they can be turned on or off b) Their polarity can be reversed c) Their strength can be changed d) All of the above
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How do electromagnets differ from regular magnets?

a) they can be turned on or off

b) Their polarity can be reversed


c) Their strength can be changed


d) All of the above

User Kemotoe
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2 Answers

2 votes

it is D: All of the above

User Austen Holland
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4 votes
their polarity can be reversed
User Peaceful
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