Acharge q moves from point a to point b in an electric field. the potential energy of the charge at point a is 5.6 × 10-10 joules and that at point b is 2.3 × 10-10 joules. if the kinetic energy at point a is zero, what is the kinetic energy at point b? a. 5.6 × 10-12 joules b. 1.3 × 10-12 joules c. 2.3 × 10-12 joules d. 3.3 × 10-10 joules e. 5.6 × 10-10 joules