A proton is released from rest at point A in a constant electric field and accel

ID: 2119514 • Letter: A

Question

A proton is released from rest at point A in a constant electric field and accelerates to point B (see part a of the drawing). An electron is released from rest at point B and accelerates to point A (see part b of the drawing). How does the change in the proton%u2019s electric potential energy compare with the change in the electron%u2019s electric potential energy?

Image: http://edugen.wileyplus.com/edugen/courses/crs6407/art/qb/qu/c19/c19_q_4.gif

Mult ch. answers:

a.) One cannot compare the change in potential energies because the proton and electron move in opposite directions.