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A wire of length $L$ metre carrying a current of $I$ ampere is bent in the form of circle. Its magnetic moment is
  • A$\frac{I L^{2}}{4 \pi} A \;m^{2}$
  • B$\frac{I L^{2}}{4} A \;m^{2}$
  • C$\frac{I \pi L^{2}}{4} A \;m^{2}$
  • D$\frac{2 I L^{2}}{\pi} A \;m^{2}$
NEET 2020, Medium
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