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JEE Main202127 Jul 2021Morning ShiftPhysicsCapacitanceActual

Two capacitors of capacities 2 C and C are joined in parallel and charged up to potential V . The battery is removed and the capacitor of capacity C is filled completely with a medium of dielectric constant K . The potential difference across the capacitors will now be:

Options

  1. AV K + 2
  2. BV K
  3. C3 V K + 2
  4. D3 V   K

Correct answer

C. 3 V K + 2

Step-by-step solution

Now, V C = 2 C V + C V K C + 2 C = 3 V   K + 2

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