A long conductor \( A B \) lies along the axis of a circular loop of radius \( R \). If the curr...

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A long conductor \( A B \) lies along the axis of a circular loop of radius \( R \). If the current in the conductor \( A B \) varies at the rate of \( I \) ampere/second, then the induced emf in the loop is:
(a) \( \frac{\mu_{0} I R}{2} \)
(b) \( \frac{\mu_{0} I R}{4} \)
(c) \( \frac{\mu_{0} \pi I R}{2} \)
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