Q. A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then the electric intensity E at Q is proportional to
A) $r^{- 2}$
B) $r^{- 4}$
C) $r^{- 1}$
D) $r^{- 3}$
Explanation
(d) On equatorial line of electric dipole, $\propto \frac{1}{r^{3}}$ .
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.