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Work on a proton/Electic Potential

  • Thread starter sdoyle1
  • Start date
  • #1
23
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Homework Statement



Imagine that a proton is held on the end of an insulated rod. How much external work is needed to move the proton from a point with a potential of 95 V to a point where it is -54V?
Express your answer in Joules, watch out for the sign of the answer.

Homework Equations





The Attempt at a Solution


I thought that you could use U=qV but it's not working- I also don't know what the point charge (q) would be. I chose this equation because you can relate the change in potential to work (U=-W)... Guidance would be great!
 

Answers and Replies

  • #2
23
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Nevermind, I figured it out.. :)
 

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