Eight capacitors each of capacity $2 \mu F$ are arranged as shown in the figure. The effective capacitance between $A$ and $B$ is (in $\mu F$)

The four capacitors,each of $25\,\mu F$,are connected as shown in the figure. The $dc$ voltmeter reads $200\,V$. The charge on each plate of the capacitor is

$A$ parallel combination of three capacitors of capacities $2C$,$C$,and $C/2$ is connected across a $10 \ V$ battery. All the capacitors are fully charged to charges $Q_1$,$Q_2$,and $Q_3$ respectively. The ratio $Q_1: Q_2: Q_3$ is

The equivalent capacitance between the points $A$ and $B$ of the network shown in the figure is (in $\text{ F}$)

Three parallel plate air capacitors are connected in parallel. Each capacitor has plate area $A/3$ and separation between the plates is $d$, $2d$, and $3d$ respectively. The equivalent capacity of the combination is ($\epsilon_0$ is the permittivity of free space).

$25$ capacitors,each of capacitance $2 \mu F$,are connected in series to a battery of $100 \ V$. The total charge stored on the capacitors is