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Given potential difference of X-ray machine find energy of X rays

  1. Feb 9, 2012 #1
    1. The problem statement, all variables and given/known data
    Given is the X-ray machine in which electrons are accelerated in the potential difference of 10000 V before hitting the electrode and loosing its energy. Find the maximum energy of the emitted X rays in keV and in Joules.

    2. Relevant equations



    3. The attempt at a solution
    So for this one I started and though it would be simple using the equation ΔV= U/q, where U would be potential energy and this potential energy would be the maximum energy of the emitted X-rays. Then I realized that I do not have q. I was wondering if I am on the right track and if so am I missing something that would allow me to find q?

    Thanks
     
  2. jcsd
  3. Feb 9, 2012 #2

    Leb

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    You are given that electrons are accelerated.
    What is the charge of an electron ?
     
  4. Feb 9, 2012 #3
    It doesn't say, that is the problem I am having.
     
  5. Feb 9, 2012 #4

    Leb

    User Avatar

    The charge of an electron has been empirically measured and also theoretically predicted/calculated. It should be given in your constant's sheet.
     
  6. Feb 9, 2012 #5
    Ok, so then i can just use that charge to find U right?
    Thanks
     
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