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Q. Find the equivalent capacitance across $A$ and $B$.Physics Question Image

Electrostatic Potential and Capacitance

Solution:

Circuit can be redrawn as follows:
image
Now, $V_{x}=V_{y}$.
Hence $\frac{25 \mu F }{5 \mu F }=\frac{7 \mu F }{2 \mu F }$
$C_{ eq }=\left(\frac{5 \times 25}{5+25}\right)+\left(\frac{10 \times 2}{10+2}\right)$
$=\frac{35}{6}=\frac{35}{6} \mu F$