Question

Three equal charges, each `+q ` are placed on the corners of an equilatreal triangel . The electric field intensity at the centroid of the triangle is
A. `kq//r^(2)`
B. `3kq//r^(2)`
C. `sqrt(3)kq//r^(2)`
D. zero

Answer 1

Correct Answer - D
Each charge will produced the same magnitude of intensity, say E at the centroid thes are directed at angles of `120^(@)` with each other. So, their vector sum will be zero.