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Question

A current carrying small loop of one turn behaves like a small magnet. If $A$ be its area, $M$ its magnetic moment, the current in the loop will be

A

\frac{M}{A}

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B

\frac{A}{M}

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C

M A

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D

A^{2} M

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Solution

The correct option is A $\frac{M}{A}$
Magnetic moment $M = i \times A ⟹ i = M / A$

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