Question

If each capacitor has capacitance $C$ in the figure $\left(a\right)$ then find $C_{AB}$.

• A. $C$
• B. $C/2$
• C. $3C/2$
• D. $\text{none of these}$

Answer 1

The correct option is B $C/2$

Look into the figure $\left(b\right)$. The dotted part is Wheatstone bridge with $C_{eq}=C$ then further equivalent circuit is shown in the figure $\left(c\right)$.


$C_{AB}=\frac{C}{2}$