Question

Electric field at the centroid of a triangle carrying q charge at each comer as

Options

• `sqrt(2)  (kq)/r`

• `1/sqrt(2) (kq)/r^2`

• `(3 kq)/r^2`

• Zero

Answer 1

Zero

Explanation:

The resultant of three forces on a unit charge at the triangle's centroid is zero, according to symmetry.