Question

If a current is passed through a spring the the spring will
(a) expand (b) compress (c)remain same (d)none of these
I know the correct answer is (b) compress, but I want correct explanation
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Answer 1

Answer:

Suppose a spring which is actually like a circular loop of many turns. Since the current flows in the same direction, even the direction of the magnetic field too will be in the same. ... Thus, when a current is passed through a spring then the spring will get compressed. Hence, option (B) is the correct answer

Answer 2

Answer:

In the given question the various turns attract each other and the spring will compress. Thus, when a current is passed through a spring then the spring will get compressed. Hence, option (B) is the correct answer.

Explanation:

Hope it helps you!!! :):):)