November 26, 2015

Homework Help: physics

Posted by Morgan on Monday, September 6, 2010 at 1:54pm.

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.

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