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CGP EDU Academic Team
Published on: August 13, 2026
A parallel plate capacitor having capacitance 12 pF is charged by a battery to a potential difference of 10 V between its plates. The charging battery is now disconnected and a porcelain slab of dielectric constant 6.5 is slipped between the plates. The work done by the capacitor on the slab is:
Text Solution
Verified by ExpertsThe correct answer is:
C
Initial energy of capacitor,
…… .(i)
Since battery is disconnected so charge remain same, 
and 
……… .. (ii)
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