For the circuit shown in figure, which of the following statements is true ?

Options

A. With `S_(1)` closed, `V_(1)=15V, V_(2)=20V`
B. With `S_(3)` closed, `V_(1)=V_(2)=25V`
C. With `S_(1)and S_(2)` closed, `V_(1)=V_(2)=0`
D. With `S_(1)and S_(3)` closed, `V_(1)=30 V, V_(2)=20V.`

Answer

D

Explanation

No change of any potential across any capacitor will occur unless the two capacitors `C_(1)` and `C_(2)` are either connected in series or in parallel .
This condition is given in none of the options. Hence the ptoentials of `C_(1)` and `C_(2)` will be maintained as `V_(1)` = 30 Volt and `V_(2)` = 20 volts with `S_(1) ` and `S_(3)` closed.