Three equal charges

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Electric Force Field and Potential · Electric Force Field and Potential

Problem

Three equal charges, each

+q

, are placed on the corners of an equilateral triangle. The electric field intensity at the centroid of the triangle is (1)

kq/r^2

(2)

3kq/r^2

(3)

\sqrt{3}kq/r^2

(4) zero