A capacitor is charged to $200\, volt$ it has $0.1$ coulomb charge. When it is discharged, energy will be.....$J$
A$1$
B$4$
C$10$
D$20$
Medium
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C$10$
c (c)Given $⇒$ $V = 200\,volt,$ $Q = 0.1\,C$
As energy $U = \frac{{QV}}{2},\,\,U = \frac{{0.1 \times 200}}{2}$$ = 10\,Joule$
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