Charge Q is given to the upper plate of an isolated parallel plate capacitor of capacitance C. The potential difference between the plates
Answer & explanation
Correct answer: option 3
In general, for charge Q1 and Q2 on upper and lower plate respectively the charge distributions on outer and inner part of the plates are shown in figure.
Here Q1 = Q, Q2 = 0
∴ Charge on inner side of plate are $\frac{Q}{2}$ and $-\frac{Q}{2}$ respectively.
Hence $V=\frac{Q / 2}{C}$
Hence (C) is correct choice.