Question: . Two identical parallel - plate capacitors, each with capacitance 1 1 . 5 F , are charged to potential difference 5 2 . 5

.

Two identical parallel

-

plate capacitors, each with capacitance

11.5

,

are charged to potential difference

52.5

V and then disconnected from the battery. They are then connected to each other in parallel with plates of like sign connected. Finally, the plate separation in one of the capacitors is doubled. Find the total energy of the system after the plate separation is doubled.

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