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Homework Help: Some basic electric potential questions

  1. Oct 23, 2008 #1
    [solved] some basic electric potential questions

    1. The problem statement, all variables and given/known data
    Find the electric potential established by the nucleus of a hydrogen atom at the mean distance of the circulating electron.

    2. Relevant equations

    V = - Integral of (E (dot) dL)
    V = kq/r from r distance of a point charge

    3. The attempt at a solution

    well, I found on wikipedia that the atomic radius of a hydrogen atom is 25 * 10 ^ (-12) meters.
    So I just used kq/r to find the potential and got the wrong answer.

    Should I be using a different distance or a different equation?

    Last edited: Oct 23, 2008
  2. jcsd
  3. Oct 23, 2008 #2
    nvm I solved it I had to use r=5.29 * 10 ^ (-11) meters
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