The effective capacitance between points $X$ and $Y$ in the figure shown below is. (Assume all the capacitors are $4 \mu F$ each) (in $\mu F$)

The equivalent capacitance between points $A$ and $B$ of the circuit shown will be

$A$ number of capacitors,each of capacitance $1\,\mu F$ and each of which gets punctured if a potential difference exceeding $500\,V$ is applied,are provided. An arrangement suitable for giving a capacitance of $2\,\mu F$ across which $3000\,V$ may be applied requires at least:

$A$ capacitor is made of a flat plate of area $A$ and the second plate has a staircase-like structure. The width of each stair is $a$ and its height is $b$. The total width of the plate is $2a$. The distance between the flat plate and the first part of the staircase is $d$. Find the capacity of the capacitor.

Three capacitors $2 \mu F$,$3 \mu F$,and $5 \mu F$ can withstand voltages up to $3 \, V$,$2 \, V$,and $1 \, V$ respectively. Their series combination can withstand a maximum voltage equal to.....$V$.

If the equivalent capacitance between points $A$ and $B$ of the combination of capacitors shown in the figure is $6C$, then the capacitor $C^1$ is: (in $C$)