An ideal cell of emf $10 \mathrm{V}$ is connected in circuit shown in figure. Each resistance is $2 \mathrm{\Omega }.$ The potential difference (in $\mathrm{V}$) across the capacitor when it is fully charged is ______.

Each of the resistors shown in the figure has resistance $R$. Find the equivalent resistance between $A$ and $B$.

The equivalent resistance between points $A$ and $B$ is: 

The maximum and the minimum equivalent resistance obtained by combining $n$ identical resistors of resistance $R$, are $R_{\max }$ and $R_{\min }$ respectively. The ratio $\frac{R_{\max }}{R_{\min }}$ is equal to