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Potential Difference question

  1. Mar 11, 2013 #1
    I posted the question and the answer from the book inside the paint document.

    My question is why is the answer not....

    Δx = 3-1 = 2m
    ΔE = 200-0 = 200V/m

    ΔV = -(Area under E vs x graph) = -Δx*ΔE/2 = -200 V

    Attached Files:

  2. jcsd
  3. Mar 11, 2013 #2


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    Your answer looks right to me.

    What the book has for a solution is bizarre .
  4. Mar 12, 2013 #3


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    The vertical axis isn't Volts it's V/m (eg the rate of change of V with distance).
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