The capacity of a condenser is $4 \times {10^{ - 6}}$ farad and its potential is $100\,\,volts$. The energy released on discharging it fully will be.......$Joule$
AIIMS 1980,AIIMS 1984, Easy
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(a) $U = \frac{1}{2}C{V^2} = \frac{1}{2} \times 4 \times {10^{ - 6}} \times {(100)^2} = 0.02\,J$
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