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  4. In the figure, magnetic energy stored in the coil is

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Q. In the figure, magnetic energy stored in the coil isPhysics Question Image

Electromagnetic Induction

Solution:

$i=\frac{V}{R}=\frac{10}{52}=5\, A$
$U=\frac{1}{2} L i^{2}$
$=\frac{1}{2} \times 2 \times 25=25\, J$