Two Point Charges of +2

Question 67
Multiple Choice

Two point charges of +2.00 μC and +4.00 μC are at the origin and at the point x = 0.000 m,y = -0.300 m,as shown in the figure.What is the electric potential due to these charges,relative to infinity,at the point P at x = 0.400 m on the x-axis? (k = 1/4πε0 = 8.99 × 109 N ∙ m2/C2) img A)117 kV B)15.7 kV C)11.7 kV D)56.0 kV E)36.0 kV