1. Three electric charges are located in the electric field of an atom with their corresponding distances as shown below. What is the potential energy to assemble the structure of the three systems of charges? (Ocm 91 = 92 = 12 n C 10cm 93 - - 12 h C 92 2. Calculate the electric potential at point P located at the center of the square of point charges shown below. Assumed d = 1.5 m. below. 3. Find the potential energy of the system of three charges in the configuration shown CLI 91:9 10cm 10cm 92 - - 29 93 = +49, 9 = 150 n C