Question

Electric intensity due to an electric dipole varies with distance $r$ as $E\propto r^n$ where n is

• A. 3
• B. -3
• C. 2
• D. -2

Answer 1

Answer: (B)

Electric intensity due to an electric dipole is given by
$E=\frac{1}{4\pi {\in }_0}\frac{p}{r^3}$ for $r>>a$
or , $E\propto \frac{1}{r^3}$