Posted by Morgan on .
How much work does the electric field do in moving a proton from a point with a potential of +120 V to a point where it is 60 V? Express your answer in joules.
I've looked through my notes, and I'm sure the answer is really easy, but I'm not seeing it.
I know that Work(Wba)= PEa  PEb and that
Electrical Potential Vba = (Vb  Va)/q where q is the charge.
I'm sorry, I think i've just confused myself and I keep trying to relate equations but it's not working.

physics 
bobpursley,
Your notes are wrong on the second equation
Work=Force*distance= Eqd= (VaVb) q
The difference in potential is 180volts, q is the charge on an electron.