Question

Determine the total capacitance if a 30  pF  capacitor is connected in series with a 0.03 μF capacitor.     Capacitance =

Answer 1

Gives

$C_1=30pF \\C_2=30pF$

Now $C_1$ And C$_2$ Is series combination

$C_{net}=\frac{C_1C_2}{C_1+C_2}$

$C{net}=\frac{30\times30}{30+30}pF=15pF$