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How much work does an electric field do in moving a proton

  1. Jan 24, 2008 #1
    1. The problem statement, all variables and given/known data

    How much work does the electric field do in moving a proton from a point with a potential of +95 V to a point where it is -37 V? Express your answer both in joules and electron volts.
    _____eV
    _____J

    2. Relevant equations

    deltaPE = q * Vba

    3. The attempt at a solution

    PE = (-1.6e-19)(138)
    PE = 2.2e-17 J

    1.6e-19 / 12.2e-17 = .007 eV
     
  2. jcsd
  3. Jan 25, 2008 #2

    Ouabache

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    you may want to recheck your calculation for Vba.
     
  4. Jan 25, 2008 #3

    mgb_phys

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    You might also think about why you use eV for the units and what step this migth save you!
     
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