Question
Find the equivalent capacitance of the syatem shown in figure between the points $a$ and $b$.

Answer


$C_{eq}$ between a & b$=\frac{\text{C}_1\text{C}_2}{\text{C}_1+\text{C}_2}+\text{C}_3+\frac{\text{C}_1\text{C}_2}{\text{C}_1+\text{C}_2}$
$=\text{C}_3+\frac{2\text{C}_1\text{C}_2}{\text{C}_1+\text{C}_2}$
$(\therefore$ The three are parallel$)$

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