Q. The electric field at the centroid of an equilateral triangle carrying an equal charge $q$ at each of the vertices is
A) Zero
B) $\frac{\sqrt{2kq}}{r^{2}}$
C) $\frac{kq}{\sqrt{2r^{2}}}$
D) $\frac{3kq}{r^{2}}$
Explanation
(a) [image:1_image329.emf]
Hence, the electric field at the centroid of triangle will be zero.
$E_{net} = 0$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.