Q. Charges $q,\ 2q,\ 3q$ and $4q$ are placed at the corners $A,B,C$ and $D$ of a square as shown in the following figure. The direction of electric field at the centre of the square is along

A) $AB$
B) $CB$
C) $BD$
D) $AC$
Explanation

(b) [image:1_image370.emf]
$E_{A} = E,\ E_{B} = 2E,\ E_{C} = 3E,\ E_{D} = 4E$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

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