If 3 charges are placed at the vertices ...

If `3` charges are placed at the vertices of equilateral triangle of charge 'q' each. What is the net potential energy, if the side of equilateral `Delta` is `l cm` ?

`1/(4piin_(0)) ( q^(2))/ l`

`1/(4piin_(0)) ( 2q^(2))/ l`

`1/(4piin_(0)) ( 3q^(2))/ l`

`1/(4piin_(0)) ( 4q^(2))/ l`

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