A) \[|B|\,=\left( \frac{{{\mu }_{0}}}{4\pi } \right)\frac{2i}{r}\]
B) \[|B|\,=\left( \frac{{{\mu }_{0}}}{4\pi } \right)\frac{r}{2i}\]
C) \[|B|\,=\left( \frac{4\pi }{{{\mu }_{0}}} \right)\frac{2i}{r}\]
D) \[|B|\,=\left( \frac{4\pi }{{{\mu }_{0}}} \right)\frac{r}{2i}\]
Correct Answer: A
Solution :
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