Explore BrainMass

Electric potential due to electric dipole

Write down an expression for the electric potential about an electric dipole, as a function of the spatial coordinates relative to the dipole.

Calculate the electric field as a function of these spatial coordinates from the electric potential.

A 2D solution (with the dipole existing in the 2D plane) is fine.


© BrainMass Inc. brainmass.com June 24, 2018, 1:41 am ad1c9bdddf

Solution Preview

Let us consider the potential at a point P with coordinates (r, θ) as shown.

The potential at a point due to a charge q is kq/r, where k = 1/(4Πε0) = 9 x 109.

r1 ≈ r - a(cos θ)

r2 ≈ r + a(cos θ)

The potential at P due to the charge +q is ...

Solution Summary

the expert examines the electric potential due to electric dipoles. A step by step solution provided.