Give the simplified expression for the following and draw the graph for variation of potential with distance.
Electric potential at inside and outside the solid non-conducting sphere.

Give the simplified expression for the following and draw the graph for variation of potential with distance. General expression for electric potential due to a dipole.

Give the simplified expression for the following and draw the graph for variation of potential with distance. Electrostatic potential due to a point charge q at a distance r from it.

Draw in the same graph, the curves showing the variation of electric field and potential due to a point charge with distance.

An electric charge Q is uniformly distributed around a thin metallic circular coil of single turn and of radius a. Find the expression for the electric potential at a point on its axis at a distance X form its its centre.