Intensity of an electric field E depends on distance r due to a dipole, as:

Question

G1 Physics · Accepted Answer

Step 1: In the far field of an electric dipole p, the axial field is approximately 2p/(4πε₀r³); the equatorial field is p/(4πε₀r³). Step 2: Both have r⁻³ dependence. So E ∝ 1/r³.