Question: A -4.0-µC charge is situated at the origin of an xy-coordinate system. What is the magnitude and direction of an electric potential at x = 6.0 m?
A) 4000 V along the +x-axis
B) 1500 V along the +x-axis
C) 6000 V along the +x-axis
D) 4000 V with no direction
E) -6000 V with no direction