If a current, that charges a capacitor is constant then graph representing the change in voltage across the capacitor with time $t$ is

In the adjoining diagram, (assuming the battery to be ideal) the condenser $C$ will be fully charged to potential $V$ if-

In the following figure, the charge on each condenser in the steady state will be, 

Dotted line represents the charging of a capacitor with resistance $X.$ If resistance is made $2X$ then which will be the graph of charging

$n$ resistances  each of resistance $R$ are joined with capacitors of capacity $C$ (each) and a battery of emf $E$ as shown in the figure. In steady-state conditions ratio of the charge stored in the first and last capacitor is