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A capacitor having a capacitance of 100m...

A capacitor having a capacitance of `100muF` is charged to a potential difference of 24V . The charging battery is disconnected and the capacitor is connected to another battery of emf `12V` with the positive plate of the capacitor joined with the positive terminal of the battery . (a ) Find the charges on the capacitor before and after the reconnection . (b ) Find the charge flown through the 12V battery . (c ) Is work done by the battery or is it done on the battery ? find its magnitude . (d ) Find the decrease in electrostatic field energy . (e ) Find the best developed during the flow of charge after reconnection.

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The correct Answer is:
(a) `4000mu C, 2000mu C " " (b) 2000mu C " " ` (c) work is done on the battery , 20 mJ
(d) 30 mJ (e) 10 mJ
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RESONANCE ENGLISH-CAPACITANCE-High Level Problems
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