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Homework Help: A -11.8nC point charge and a +23.9nC point charge are 13.8cm apart on the x-axis

  1. Oct 24, 2014 #1
    1. The problem statement, all variables and given/known data
    What is the magnitude of the electric field at the two points on the x-axis where the electric potential is zero?

    2. Relevant equations
    E= kQ/r^2

    3. The attempt at a solution
    I tried setting three cases, between the charges, to the right of the positive charge, and to the left of the negative charge. Assuming the negative charge is placed on x-axis at x=0.
  2. jcsd
  3. Oct 24, 2014 #2


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    Staff: Mentor

    That's a good start. What did you get?
  4. Oct 24, 2014 #3


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    Staff: Mentor

    Okay, so let's see your attempts. What did you find and how?
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