Question

The electric potential at a point situated at a distance r on the axis of a short electric dipole of moment p will be $1/4\left(\pi {\epsilon }_0\right)$ times

• A. p/r${}^3$
• B. p/r${}^2$
• C. p/r
• D. none of the above

Answer 1

Answer: (B)

p/r${}^2$

The electric potential due to a dipole of moment p is given by,

$V=\frac{1}{4\pi {\epsilon }_o}\frac{p}{r^2}$

Hence $V=\frac{p}{r^2}$