Question

Derive an expression of electric field intensity on axial line of electric dipole

Answer 1

Answer:

Goal: To find electric field at point P on the axial line of the dipole, OP=r. Let E1 and E2 be electric field on P due to charges +q and −q respectively. If r>>a, then E=kr42pr=kr32p. In vector form, E =kr32p .

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