As before, we take the origin at the
centre of the dipole Now we know that the
electric field obeys the superposition
principle Since potential is related to the
work done by the field, electrostatic
potential also follows the superposition
principle Thus, the potential due to the
dipole is the sum of potentials due to the
charges q and –q
V
rq
rq
=
−




41
0
1
2
πε
(2