A parallel plate air capacitor of capacitance C 0 is connected to a cell of emf V and then disconnected from it. A dielectric slab of dielectric constant K, which can just fill the air gap of the capacitor, is now inserted in it. Which of the following is incorrect?
A
The potential difference between the plates decreases K times
B
The energy stored in the capacitor decreases K times
C
The change in energy 
D
The change in energy 
Text Solution
Verified by ExpertsThe correct answer is:
D
Initial energy, 
Final energy, 
Change in energy 
.
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