can we find the electric field due to a dipole at a point lying on the line joining them?

Asked by bhumika dhamija | 4th Apr, 2012, 11:36: PM

Expert Answer:

The axial line of a dipole is the line passing through the positive and negative charges of the electric dipole.

Consider a system of charges (-q and +q) separated by a distance 2a. Let 'P' be any point on an axis where the field intensity is to be determined.

Electric field at P (EB) due to +q

Electric field at P due to -q (EA)

Net field at P is given by

Simplifying, we get

As a special case :

Answered by  | 6th Apr, 2012, 11:58: AM

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