The capacity of a condenser is $4 \times 10^{- 6} F$ is charged to a potential of $100 V$ . The energy released on discharging it fully will be

0.02 J

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0.04 J

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0.025 J

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0.05 J

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Solution

The correct option is A $0.02 J$
The energy released on discharging the capacitor,

$U = \frac{1}{2} C V^{2}$

So, $U = \frac{1}{2} \times 4 \times 10^{- 6} \times 10^{4} = 0.02 J$

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The capacity of a condenser is 4×10−6 F is charged to a potential of 100 V. The energy released on discharging it fully will be

The correct option is A 0.02 JThe energy released on discharging the capacitor, U=12CV2 So, U=12×4×10−6×104=0.02 J

The capacity of a condenser is $4 \times 10^{- 6} F$ is charged to a potential of $100 V$ . The energy released on discharging it fully will be

The correct option is A $0.02 J$
The energy released on discharging the capacitor,

$U = \frac{1}{2} C V^{2}$

So, $U = \frac{1}{2} \times 4 \times 10^{- 6} \times 10^{4} = 0.02 J$