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MHT CET202122 Sep 2021Morning ShiftPhysicsCapacitanceActual

If the charge on the capacitor is increased by 2 C . The energy stored in it increase by 21 % . Total original charge on the capacitor is

Options

  1. A10 C
  2. B5 C
  3. C20 C
  4. D15 C

Correct answer

C. 20 C

Step-by-step solution

aligned & U= q^2 2 C & 1.21 U= (q+2)^2 2 C aligned By solving them, q=20 C

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