In the above problem if the battery is disconnected before inserting the dielectric, then potential difference will be-
Text Solution
Verified by ExpertsThe correct answer is:
A
Charge on battery = Q = CV = 4 C
Now charge remains same, as battery is disconnected new capacitance = C´ = KC = 8C
C´V´ = Q
V´ = 
= 
= 
V
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