Question

Two equal charges $‘q^{\prime }$ of opposite sign are separated by a small distance $‘2a^{\prime }$. The electric intensity $‘E^{\prime }$ at a point on the perpendicular bisector of the line joining the two charges at a very large distance $‘r^{\prime }$ from the line is :

• A. $\frac{1}{4\pi {\epsilon }_0}\frac{qa}{r^2}$
• B. $\frac{1}{4\pi {\epsilon }_0}\frac{2qa}{r^3}$
• C. $\frac{1}{4\pi {\epsilon }_0}\frac{2qa}{r^2}$
• D. $\frac{1}{4\pi {\epsilon }_0}\frac{qa}{r^3}$

Answer 1

Answer: (B)