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U = qV for Mass Spectrometer

  1. Feb 26, 2004 #1
    Given: A proton is accelerated up to KE before it exits into a magnetic field and is deflected.

    Question: What voltage battery is required accelerate the proton to that energy?

    So I use U = qV

    the question is.. what is Q.. is q the charge of the proton being accelerated through the electric field, or is q the charge of the electron that is travelling through the circuit to power the electric field?

  2. jcsd
  3. Feb 26, 2004 #2
    The proton being accelerated.

  4. Feb 28, 2004 #3
    ~+1.602(10-19) Coulombs
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