. A point charge q_1 is held stationary at the origin. A second point charge q_2 is placed at point a, and the electric potential energy of the pair of charges is +5.4 ×〖10〗^(-8) Joules. When the second charge is moved to point b, the electric force on the charge does -1.9 ×〖10〗^(-8) Joules of work. What is the electric potential energy of a pair of charges when the second charge is at point b?

Question

. A point charge q_1 is held stationary at the origin. A second point charge q_2 is placed at point a, and the electric potential energy of the pair of charges is +5.4 ×〖10〗^(-8) Joules.  When the second charge is moved to point b, the electric force on the charge does -1.9 ×〖10〗^(-8) Joules of work. What is the electric potential energy of a pair of charges when the second charge is at point b?