MHT CET · Physics · Capacitance
If the charge on the capacitor is increased by 2C, the energy stored in it increases by \(21 \%\). The original charge on the capacitor is
- A 20 C
- B 15 C
- C 10 C
- D 5 C
Answer & Solution
Correct Answer
(A) 20 C
Step-by-step Solution
Detailed explanation
\(E_2 = 1.21 E_1\) \(\frac{(Q_1+2)^2}{2C} = 1.21 \frac{Q_1^2}{2C}\)
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