A) \[\frac{{{\mu }_{0}}I}{4\pi r}~\left[ \frac{3\pi }{2}+1 \right]\]
B) \[\frac{{{\mu }_{0}}I}{4\pi r}~\left[ \frac{3\pi }{2}-1 \right]\]
C) \[\frac{{{\mu }_{0}}I}{4\pi r}~\left[ \frac{\pi }{2}+1 \right]\]
D) \[\frac{{{\mu }_{0}}I}{4\pi r}~\left[ \frac{\pi }{2}-1 \right]\]
Correct Answer: A
Solution :
\[\frac{3}{8}\,\frac{{{\mu }_{0}}I}{R}+\frac{{{\mu }_{0}}I}{4\pi R}\]
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