Q. Two point charges of $20\mu C$ and $80\mu C$ are $10cm$ apart. Where will the electric field strength be zero on the line joining the charges form $20\mu C$ charge

A) $0.1\ m$
B) $0.04\ m$
C) $0.033\ m$
D) $0.33\ m$
Explanation

(c) Let neutral point be obtained at a distance $x$ from $20\ \mu C$ charge. Hence at neutral point
$\frac{20}{(x)^{2}} = \frac{80}{(10 - x)^{2}} \Rightarrow x = + 0.033\ m$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.