MHT CET 2023 Physics question
A parallel plate capacitor has plate area 'A' and separation between plates is 'd'. It is charged to a potential difference of V<sub>0</sub> volt. The charging battery is then disconnected and plates are pulled apart three times the initial distance. The work done to increase the distance between the plates is ( = permittivity of free space)
Answer: (D)
Solution
Initially , and . After the battery is disconnected the charge stays constant. With separation , and . Work done = increase in
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