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Question: Two identical capacitor are connected in parallel across a potential difference V. After they are fu...

Two identical capacitor are connected in parallel across a potential difference V. After they are fully charged the positive of first capacitor is connected to negative of second and negative of first is connected to positive of other. The loss in energy will be –

A

12\frac{1}{2}cv2

B

cv2

C

CV24\frac{CV^{2}}{4}

D

Zero

Answer

cv2

Explanation

Solution

DU = (V1 + V2)2 = (2V)2 = CV2