- The radius of a circular loop is \( r \) and a current \( i \) is...

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- The radius of a circular loop is \( r \) and a current \( i \) is flowing in it. The equivalent magnetic moment will be
\( \mathrm{P} \)
(1) ir
(2) \( 2 \pi \mathrm{ir} \)
WV
(3) \( i \pi r^{2} \)
(4) \( \frac{1}{r^{2}} \)
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