Question

Find the equivalent capacitance across $A$ and $B$.

• A. $\frac{35}{6}\mu F$
• B. $\frac{25}{6}\mu F$
• C. $15\mu F$
• D. none of these

Answer 1

Answer: (A)

Circuit can be redrawn as follows:

Now, $V_x=V_y$.
Hence $\frac{25\mu F}{5\mu F}=\frac{7\mu F}{2\mu F}$
$C_{eq}=\left(\frac{5\times 25}{5+25}\right)+\left(\frac{10\times 2}{10+2}\right)$
$=\frac{35}{6}=\frac{35}{6}\mu F$