Question

The electric field at a point at a distance $r$ from an electric dipole is proportional to :

• A. $\frac{1}{r}$
• B. $\frac{1}{r^2}$
• C. $\frac{1}{r^3}$
• D. $r^2$

Answer 1

Answer: (C)

$\frac{1}{r^3}$

Following points to be remembered (the derivations can be seen in NCERT):-
1. The electric field for a dipole is proportional to $\frac{1}{r^3}$
2. The potential for a dipole is proportional to $\frac{1}{r^2}$