Question

Three uncharged capacitors of capacitance $c_1=1\mu F,C_2=2\mu F$ and $C_3=3\mu F$ are connected as shown in the figure. The potential of point A, B and D are $10$ volt, $25$ volt and $20$ volt respectively. Determine the potential at point O.

Answer 1

Apply KCL;

$Q_a+Q_b+Q_c=0$

$1(10-V)+2(25-V)+3(20-V)=0$

$\Rightarrow V=20V$