Two identical charges are placed at two corners of an equilateral triangle

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

Problem

Two identical charges are placed at two corners of an equilateral triangle. The potential energy of the system is

U

. The work done in bringing an identical charge from infinity to the third vertex is (a)

U

(b)

2U

(c)

3U

(d)

4U