A -4.0-?C 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) 1500 V along the +x-axis
B) 6000 V along the +x-axis
C) -6000 V with no direction
D) 4000 V along the +x-axis
E) 4000 V with no direction
C
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An 800 V/m electric field is directed along the +x-axis. If the potential at x = 0 m is 2000 V, what is the potential at x = 2 m?
A) 200 V B) 400 V C) 600 V D) 800 V E) 1000 V