Three identical metal plates of area S are at equal distances b as shown. Initially metal plate A is uncharged, while metal plates B and C have respective charges `+Q_(0)` and `-Q_(0)` initially as shown. Metal plates A and C are connected by switch K through a resistor of resistance R. the key K is closed at time t = 0

After the steady state is achieved, the charge on plate A is :

Options

A. `(Q_(0))/(2)`
B. `-(Q_(0))/(2)`
C. `(Q_(0))/(3)`
D. `-(Q_(0))/(3)`

Explanation

At steady state charges on both the capacitor will be equal.Hence charge on plante A is `-Q_0//2`.