MHT CET 2023 Physics question

Physics Electrostatic Potential and Capacitance MHT CET 2023

If the charge on the capacitor is increased by 3 coulomb, the energy stored in it increases by 44%. The original charge of the capacitor is

(A)10 C
(B)15 CCorrect
(C)20 C
(D)25 C

Answer: (B)

Solution

Energy stored , so for a fixed capacitor . A 44% increase means . Taking the square root, , so

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Question ID VK-097218