Q. Two unlike charges of magnitude $q$ are separated by a distance $2d.$ The potential at a point midway between them is
A) Zero
B) $\frac{1}{4\pi\varepsilon_{0}}$
C) $\frac{1}{4\pi\varepsilon_{0}}.\frac{q}{d}$
D) $\frac{1}{4\pi\varepsilon_{0}}.\frac{2q}{d^{2}}$
Explanation
(a) Potential at mid point $O,\ V = \frac{kq}{d} + \frac{k( - q)}{d} = 0$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.