The electric potential at the origin of an xy-coordinate system is 40 V. A -8.0-μC charge is brought from x = +∞ to that point. What is the electric potential energy of this charge at the origin?
A) 8.0 μJ
B) 40 μJ
C) -3.2 × 10-4 J
D) -40 μJ
E) 3.2 × 10-4 J
1
Expert's answer
2012-11-02T10:19:53-0400
Potential energy Ep of that charge is Ep = (40 V)*(-8.0-μC) = -3.2 × 10-4 J
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