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Question

Which of the following is/are true about electromagnets?


A

The magnetic properties are permanent

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B

Magnetic properties remain as long as the current flows

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C

It does not have poles

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D

Both B and C

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Solution

The correct option is B

Magnetic properties remain as long as the current flows


The magnetic properties of an electromagnet are due to the flow of current. Hence, they do not have permanent magnetic properties but they do have poles.


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