Two point charges of magnitude 4.0 ?C and -4.0 ?C are situated along the x-axis at x1 = 2.0 m and x2 = -2.0 m, respectively. What is the electric potential energy of this system of charges?
A) -36 mJ
B) 36 mJ
C) 0 J
D) -72 mJ
E) 72 mJ
A
Physics & Space Science
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