1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Point charge / potential / work

  1. Sep 23, 2008 #1
    1. The problem statement, all variables and given/known data

    Two point charges q1 = +2.80 nC and q2 = -6.30 nC are 0.100 m apart. Point A is midway between them and point B is 0.080 m from q1 and 0.060 m from q2 (Fig. 23.29). Take the electric potential to be zero at infinity.

    ***Figure attached***

    (a) Find the potential at point A.

    (b) Find the potential at point B.

    (c) Find the work done by the electric field on a charge of 2.50 nC that travels from point B to point A.

    2. Relevant equations

    V= k summation( q/r) of each charge and radius
    w = q(delta v)

    3. The attempt at a solution

    when answering (a) and (b) i got -630 and -630 so by the second relevant equation the answer to (c) should be "0" but i got that answer wrong.

    what am i doing wrong

    Attached Files:

  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you help with the solution or looking for help too?
Draft saved Draft deleted

Similar Discussions: Point charge / potential / work