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Electric Potential Energy of a Point Charge System

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A system consists of three point charges, q1=+qq_1 = +q, q2=+qq_2 = +q, and q3=−2qq_3 = -2q, positioned at the vertices of an equilateral triangle with side length aa. What is the total electric potential energy of this system?

A

-3

B

0

C

+1

D

-2

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