An electron moves from point A where the potential is Va=+20.0kV to point B where the potential is Vb=- 40.0 kV. (These potentials are causedd by other charges)
A. what was the change of the system's electric potential?
B What charge in the kinetic energy did the electron experience? give results in joules
C. what change in kinetic energy did the electron experience, measured in electron volts.