Question

Four capacitors $C_1=1\mu F$, $C_2=2\mu F$, $C_3=3\mu F$ and $C_4=4\mu F$ are connected as given in figure. The potential of junction O is

• A. 16.5 V
• B. 18 V
• C. 15.5 V
• D. 18.5 V

Answer 1

The correct option is D 18.5 V

Total chare must be zero

$Q_1+Q_2+Q_3+Q_4=0$

Potential at V

$(V-10)\left(1\right)+(V-20)\left(2\right)+(V-30)\left(4\right)+(V-5)3=0$

$V-10+2V-40+4V-120+3V-15=0$

$10V=185$

$V=18.5$V. options $4$.