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A circular loop has a radius of $5\, cm$ and it is carrying a current of $0.1\, amp$. Its magnetic moment is
  • A$1.32 \times {10^{ - 4}}\,amp - {m^2}$
  • B$2.62 \times {10^{ - 4}}\,amp{\rm{ - }}{m^2}$
  • C$5.25 \times {10^{ - 4}}\,amp{\rm{ - }}{m^2}$
  • D$7.85 \times {10^{ - 4}}\,amp{\rm{ - }}{m^2}$
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