Three charges are placed as follows along the x- and y-axes of an xy-coordinate system: q1 = 2.00 ?C at x1 = 0 m, q2 = 4.00 ?C at x2 = 3.00 m, and q3 = 6.00 ?C at y = 4.00 m. What is the electric potential energy of this system of charges?
A) -94.2 mJ
B) 94.2 mJ
C) 0 J
D) -90.0 mJ
E) 90.0 mJ
B
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