What is the electric potential energy of the group of charges in (Figure 1)? Assume that q = -2.0 nC. Express your answer with the appropriate units.

Revelant knowledge 

Electric potential energy is a type of potential energy (measured in joules) that is a result of prudent Coulomb forces. The force is related to the configuration of a specific group of points within a specified system. A object could possess electric potential energy because of two primary components the electric charge it has and its position relative in relation to others electrically charged object.