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Six equal point charges q each are place...

Six equal point charges q each are placed at six corners of a hexago of side a. Find out potential energy of charge system

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`U_("Net") = (U_(1) + U_(2) + U_(3) + U_(4) + U_(5) + U_(6))/(2)`
Due to symmetry `U_(1) = U_(2) = U_(3) = U_(4) = U_(5) = U_(6)`
so `U_("net") = 3U_(1) = (3Kq^(2))/(a)[2+(2)/(sqrt(3))+(1)/(2)]`
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