College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 32

Two point charges Q 1 = +5.00 nC and Q 2 = 3.00 nC are separated by 35.0 cm. (a) What is the electric potential at a point midway between the charges (b) What is the potential energy of the pair of charges What is the significance of the algebraic sign of your answer