The parallel combination of two air filled parallel plate capacitors of capacitance 
and 
is connected to a battery of voltage, 
. When the capacitor are fully charged, the battery is removed and after that a dielectric material of dielectric constant 
is placed between the two plates of the first capacitor. The new potential difference of the combined system is:
Text Solution
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After fully charging, battery is disconnected.
Total chare of the system 
After the insertion of dielectric of constant 
New potential (common)
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