In the circuit shown in the figure, there are two parallel plate capacitors each of capacitance C. The switch `S_1` is pressed first to fully charge the capacitor `C_1` and then released. The switch `S_2` is then pressed to charge the capacitor `C_2`. After some time, `S_2` is released and then `S_3` is pressed. After some time

Options

A. the charge on the upper plate `C_1 is 2 CV-0`
B. the charge on the upper plate of ` C_1 is CV_0`
C. the charge on the upper plate of ` C_2is 0.`
D. the charge on the upper plate of ` C_2 is CV_0-`

Answer

B, D