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Equipotential Surfaces

  1. Sep 15, 2013 #1
    1. The problem statement, all variables and given/known data
    The drawing shows a graph of a set of equipotential surfaces in cross section. The grid lines are 2.0 cm apart. Determine the magnitude and direction of the electric field at position D.
    Specify whether the electric field points toward the top or the bottom of the drawing.
    phpJfgryA.png

    2. Relevant equations
    E=-ΔV/ΔS
    d=2.0x10-3
    3. The attempt at a solution

    I am uncertain how to solve for this problem, ΔV is usually between 2 variables, final - initial. Do I repeat this process for each field above point D?
     
  2. jcsd
  3. Sep 15, 2013 #2
    Guys, help?
     
  4. Sep 15, 2013 #3

    Dick

    User Avatar
    Science Advisor
    Homework Helper

    You can't say EXACTLY what the E field is. You can only approximate it. I would pick the two nearest points on the equipotential lines and work from there.
     
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