APFIVE Potential Energy in a Three-Charge System
A system consists of three point charges: $$q_1 = 2q$$ at $$(0,0)$$, $$q_2 = -q$$ at $$(d,0)$$, and $$q_3 = 3q$$ at $$(0,d)$$. What fraction of the total electric potential energy of the system is due to the interaction between $$q_1$$ and $$q_3$$?
A
$$\frac{6}{4 - 3/\sqrt{2}}$$
B
3/5
C
1/3
D
1/2
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