Some useful graphs showing variation of potential and field strengths with distance.
In the case of the shell charge on the shell is assumed constant and in case of the sphere charge density is assumed constant.
In case of concentric shells the charge on the outer shell is double the charge on the inner shell.
Radius of the shell/sphere/inner shell can be decreased/increased by taps on left/right halves of the graph.
Following equations are plotted in the graphs.
