Physics Electrostatics Potential & Capacitance Electric Field and Potential,Defference,Energy and Dipole MCQ (Single Correct)

Tow identical capacitors are joined in parallel, charged to a potential V, separated and then connected in series, the positive plate of one is connected to the negative of the other. Which of the following is true?

A
The charges on the free plated connected together are destroyed.
B
The energy stored in the system increases.
C
The potential difference between the free plates is 2 V.
D
The potential difference remains constant.

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The correct answer is:
C

When the two capacitors charged to same potential are connected in series, then total potential difference

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