Two point dipoles of dipole moment and are at a distance from each other and

PHYSICS · Single correct · CBSE · Physics · Electric Charges and Fields · Electric Charges and Fields

Problem

Two point dipoles of dipole moment

\vec{p}_1

and

\vec{p}_2

are at a distance

x

from each other and

\vec{p}_1 \parallel \vec{p}_2

. The force between the dipoles is : (1)

\frac{1}{4\pi\epsilon_0} \frac{4p_1 p_2}{x^4}

(2)

\frac{1}{4\pi\epsilon_0} \frac{3p_1 p_2}{x^3}

(3)

\frac{1}{4\pi\epsilon_0} \frac{6p_1 p_2}{x^4}

(4)

\frac{1}{4\pi\epsilon_0} \frac{8p_1 p_2}{x^4}