V_p V_1 V_2. So recapping the formula for the electrical potential energy between two charges is gonna be k Q1 Q2 over r. V2 k q 1 r 12.
Since we know where every charge is thats gonna be creating an electric potential at P we can just use the formula for the electric potential created by a charge and that formula is V equals k the electric constant times Q the charge creating the electric potential divided by r which is the distance from the charge to the point where its creating the electric potential.
The discussion of electric potential is important because we are always looking for convenient sources of energy. A particle of charge is located on the -axis at the point. V2 k q 1 r 12. Electric potential is a scalar quantity.