Point charges +4.00 μC and +2.00 μC are placed at the opposite corners of a rectangle as shown in the figure.What is the potential at point A,relative to infinity,due to these charges? (k = 1/4πε0 = 8.99 × 109 N ∙ m2/C2) 
A) 0.899 kV
B) 8.99 kV
C) 89.9 kV
D) 899 kV
E) 8990 kV
Correct Answer:
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