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Electric Field Problem

  1. Oct 7, 2007 #1
    Can someone please walk me through this problem and help me solve it?

    Two point charges, q1 = 4.0×10-6 C and q2 = -1.0×10-6 C, are located on the x axis at
    x1 = -1.0 cm and x2 = 3.0 cm.

    (a) Determine the electric field at the origin.

    (b) Determine the x coordinate of a point on the positive x axis where the electric field is zero; i.e., a test charge placed at this point would experience no force.
  2. jcsd
  3. Oct 7, 2007 #2
    Please can someone help me do this problem step-by-step. I know that it is an easy problem for a lot of you out there so can someone please help?? This relates to another thread that I posted about electric fields.
    Last edited: Oct 7, 2007
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