Question

Make a situation in which a dipole is placed along Z-axis at origin. Find electrical potential at a point P.  The point P is lies at distance Z from the origin along the dipole axis.

Answer 1

The electrical potential at a point P at distance Z from the origin along the dipole axis is

$$V=\frac{\textbf{p}·\hat{z}}{4\pi\epsilon_0 Z^2}.$$