Which quantity is same in each capacitor of series connection?

The potential at the point $B$ in the given figure is . . . . . . $V$.

The equivalent capacitance between points $A$ and $B$ as shown in the figure is:

Five capacitors each of capacity $C$ are connected as shown in the figure. If their resultant capacity is $2 \mu F$,then the capacity of each capacitor is: (in $\mu F$)

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

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.