Three condensers each of capacitance $2 \ F$ are connected in series. The resultant capacitance is ......... $F$.

In the given circuit,what is the potential difference across the $4.5\ \mu F$ capacitor in $V$?

$A$ $100 \, V$ battery is connected across the series combination of two capacitors of $4 \, \mu F$ and $8 \, \mu F$. The energy stored in the series combination is

Three capacitors of capacitances $2 \;pF$,$3 \;pF$,and $4 \;pF$ are connected in parallel.
$(a)$ What is the total capacitance of the combination?
$(b)$ Determine the charge on each capacitor if the combination is connected to a $100 \;V$ supply.

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

Three condensers of capacities $C_1$,$C_2$,and $C_3$ are connected in series with a source of e.m.f. $V$. The potentials across the three condensers are in the ratio: