MHT CET 2026 Physics question

Initially, 'n' identical capacitors are joined in parallel, are charged to potential 'V'. Now they are separated and joined in series. Then

(A)potential difference and total energy of the combination remain the same
(B)potential difference remains the same and energy increases 'n' times
(C)potential difference becomes 'nv' and energy remains the sameCorrect
(D)potential difference is 'nv' and energy increases 'n' times.

Answer: (C)

Solution

Each capacitor (capacitance ) is charged to potential , so each holds charge and energy ; total initial energy . When separated and joined in series (positive plate to negative plate of the next), the potential differences add: . Each still

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Question ID VK-096032