How much energy would be stored in a $2 H$ coil that has $4 A$ going through it?

2.0 J

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4.0 J

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8.0 J

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16.0 J

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Solution

The correct option is D $16.0 J$
Given : $L = 2$ H $I = 4$ A
Energy stored in the coil $E = \frac{1}{2} L I^{2} = \frac{1}{2} \times 2 \times 4^{2} = 16.0$ J

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How much energy would be stored in a 2H coil that has 4A going through it?

The correct option is D 16.0JGiven : L=2 H I=4 AEnergy stored in the coil E=12LI2=12×2×42=16.0 J

How much energy would be stored in a $2 H$ coil that has $4 A$ going through it?

The correct option is D $16.0 J$
Given : $L = 2$ H $I = 4$ A
Energy stored in the coil $E = \frac{1}{2} L I^{2} = \frac{1}{2} \times 2 \times 4^{2} = 16.0$ J