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Current Loop Is a Magnet?

0.5A current ...

Question

$0.5 A$ current is flowing in a loop of area $0.25 m^{2}$ . What will be the magnetic moment of this loop?

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Solution

Magnetic moment of current carrying loop is given by,
$m = I A$
$m = 0.5 \times 0.25 = 0.125 A m^{2}$

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