Question

Find the equivalent capacitance across AB (all capacitances in $\mu$ F) :

• A. $\frac{20}{3}\mu F$
• B. $9\mu F$
• C. $48\mu F$
• D. None of these

Answer 1

The correct option is B $9\mu F$

By law for series and parallel combinations of capacitors.

By wheatstone bridge

$C_{AB}=(\frac{30\times 10}{30+10}+\frac{6\times 2}{6+2})\mu F$

$C_{AB}=9\mu F$