In the figure,three capacitors each of capacitance $6\,pF$ are connected in series. The total capacitance of the combination will be

Find the equivalent capacitance between point $A$ and $B$. (in $C$)

Three capacitors of capacitance $C$ ($\mu F$) are connected in parallel, and this combination is connected in series with another capacitor of capacitance $C$. If the effective capacitance is $3.75 \mu F$, then the capacity of each capacitor is: (in $\mu F$)

In the circuit shown in the figure,the effective capacitance between $A$ and $B$ is ...... $\mu F$.

Two capacitances of capacity $C_1$ and $C_2$ are connected in series and a potential difference $V$ is applied across the combination. The potential difference across $C_1$ will be:

Capacitors with capacitances $C_1 = C$,$C_2 = 2C$,$C_3 = 3C$,and $C_4 = 4C$ are connected to a battery as shown in the figure. The ratio of charges on $C_2$ and $C_4$ is: