Several charges in the neighborhood of point P produce an electric potential of 6.0 kV (relative to zero at infinity) and an electric field of 
N/C at point P.Determine the work required of an external agent to move a 3.0-μC charge along the x axis from infinity to point P without any net change in the kinetic energy of the particle.
A) 21 mJ
B) 18 mJ
C) 24 mJ
D) 27 mJ
E) 12 mJ
Correct Answer:
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