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Question: Answered & Verified by Expert
Initially $n$ identical capacitors are joined in parallel and are charged to potential $V$. Now they are separated and joined in series. Then
PhysicsCapacitanceMHT CETMHT CET 2022 (11 Aug Shift 1)
Options:
  • A Potential difference becomes $n V$ and energy remains the same.
  • B potential difference is $n V$ and energy increases $n$ times
  • C potential difference total energy of combination remains same
  • D potential difference remains the same and the energy increases $n$ times.
Solution:
1496 Upvotes Verified Answer
The correct answer is: Potential difference becomes $n V$ and energy remains the same.
Charge will not flow and potential difference across each capacitor will be $V$. Hence, total potential difference across the series combination will be $n V$.
Total energy will remain same as charge is not flowing.

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