PEe = electrical potential energy
W = work done by system as charge
moves in from infinity
Work by field
W = work done by field
k = Coulomb’s constant
q = electric charge
ri = initial separation
rf = final separation
Electric potential energy
WhenPEe = 0 at infinite separation
PEe = electric potential energy
k = Coulomb’s constant
q = electric charge
r = separation of charges
(^440) Copyright 2000-2007 Kinetic Books Co. Chapter 24