Question

Obtain the expression for electric field intensity due to an electric dipole at any point on

the axial line. Show that for a short dipole E α 1

3
, where x is the distance from the
centre of the dipole.​

Answer 1

Explanation:

Hint: To derive the expression for electric field due to an electric dipole, consider AB is an electric dipole of two point charges – q and + q separated by small distance 2d and then consider that P is a point along the axial line of the dipole at a distance r from the midpoint O of the electric dipole.