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Physics
A capacitor of capacitance 50 μ F is charged to 10 volts. Its energy is equal to
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Q. A capacitor of capacitance $50\,\mu F$ is charged to $10\, volts$. Its energy is equal to
Electrostatic Potential and Capacitance
A
$2.5\times10^{-3}$ jouloes
67%
B
$2.5\times10^{-4}$ jouloes
5%
C
$5\times10^{-2}$ jouloes
24%
D
$1.2\times10^{-8}$ jouloes
5%
Solution:
$E = \frac{1}{2} CV^2 = \frac{1}{2} \times 50 \times 10^{-6} \times (10)^2 $ J = 2.5 $\times 10^3$ J.