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Homework Help: Find the speed of an electron

  1. Jan 18, 2009 #1
    1. The problem statement, all variables and given/known data

    Assuming the electron starts from rest, what will be the final speed reached by the electron?

    We have p.d. of 22kv, and the 'work done on the electron', worked out previously as 3.25^-15

    2. Relevant equations

    *shrug* I swear we have never covered this before

    3. The attempt at a solution

    No idea how to even begin
  2. jcsd
  3. Jan 18, 2009 #2


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    Homework Helper

    The work done by the p.d.=Change in kinetic energy of the electron

    Work done = p.d. x Charge of the electron
  4. Jan 18, 2009 #3
    *facepalm* I should have known that.

    Thanks rock.freak!
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