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CGP EDU Academic Team
Published on: September 12, 2026
Two insulated metallic spheres of $3 \mu F$ and $5 \mu F$ capacitances are charged to 300 V and 500V respectively. The energy loss, when they are connected by a wire is
Text Solution
Verified by ExpertsThe correct answer is:
C
$\Delta U = \frac{1}{2} \frac{C_1 C_2 (V_2 - V_1)^2}{(C_1 + C_2)}$
$\frac{(3 \times 5) \times 10^{-12} \times (500 - 300)^2}{(3 + 5) \times 10^{-6}}$
$= \frac{15 \times 10^{-1 2} \times 4 \times 10^{4}}{8 \times 10^{-6}} = 0.0375J$
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