Q.
Four charges arranged the at the corners of a square $ABCD$, as shown in the adjoining figure. The force on the charge kept at the centre $O$ is
A) Zero
B) Along the diagonal $AC$
C) Along the diagonal $BD$
D) Perpendicular to side $AB$
Explanation
(c) We put a unit positive charge at $O$. Resultant force due to the charge placed at $A$ and $C$ is zero and resultant charge due to $B$ and $D$ is towards $D$ along the diagonal $BD$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.