# Electric potential energy

Three equal point charges, each with charge $$1.00 \text{ } \mu \text{C}$$, are placed at the vertices of an equilateral triangle whose sides are of length $$0.7 \text{ m}.$$ What is the approximate electric potential energy $$U$$ of the system?

Take as zero the potential energy of the three charges when they are infinitely far apart. Use $$\varepsilon_{0} = 8.85×10^{−12}$$ for the permittivity of free space.

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