A point charge of +3.0 mC is located at the origin of a coordinate system and a second point charge of -9.0 mC is at x = 1.00 m. What is the electric potential at the x = 0.50 m point? (ke = 8.99 × 10^9 N×m2/C2)
a. -5.4 × 10^4 V
c. 16 × 10^4 V
b. 11 × 10^4 V
d. -11 × 10^4 V
D
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