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Question concerning a formula to calculate work

  1. Apr 27, 2009 #1
    I have the formula W=q[tex]\Delta[/tex]V. Where [tex]\Delta[/tex]V is the change in electric potential, and q is a charge. Say I wanted to move a point charge some distance in an electric field (created by another point charge) and calculate the work associated with this movement. Does the q in the above equation relate to the point charge I'm moving, or the one that is creating the electric field?

    I know V for a point charge is kq/r, and I would use the charge of the point charge I'm moving there.

  2. jcsd
  3. Apr 27, 2009 #2


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    q in the "W = q ΔV" equation refers to the charge being moved. V refers to the potential due to the other (non-moving) point charge.
  4. Apr 27, 2009 #3
    That makes sense. Thanks for the clarification.
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