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Homework Help: Velocity of Electron through potential difference

  1. Jul 3, 2008 #1
    Using your actual knowledge of the actual charge of an electron and the mass of an electron, determine he velocity of an electron that has been accelerated across a potential difference of 100000 volts.

    Please show me how to do this question. Thanks
     
  2. jcsd
  3. Jul 3, 2008 #2
    Hint: when the electron in accelerated over the potential difference, its kinetic energy increases. Is there an equation that relates the electron's energy to voltage?
     
  4. Jul 6, 2008 #3
    are you able to give me a little bit more infomation about how you find it. I don't really get this topic that well. Thanks
     
  5. Jul 6, 2008 #4

    rock.freak667

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    Homework Helper

    Energy supplied by the pd is VQ=Ve (e is charge on the electron) and all that energy goes into increasing the kinetic energy of the electron (what's the formula for kinetic energy?)
     
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