The electric field on the axial line of a short electric dipole at distance r is

1. For a short dipole (r ≫ 2a), the axial field is stronger than the equatorial. 2. E_axial = 2 k p / r³, pointing along the dipole direction. 3. Compare with E_equatorial = k p / r³, opposite to p. 4. Both fields decrease as 1/r³, faster than a point charge. _Source: syllabus Physics, Ch 1 "Electric Charges and Fields", §1.8_