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One final electric field problem

  1. Jan 24, 2004 #1
    A ring-shaped conductor with radius a=.029 m has a total positive charge Q=1.35x10^-9 C uniformly distributed around it. The center of the ring is at the origin.
    What is the electric field at point P, which is on the axis at x=.3m?
    I used the equation E=(kQx)/(x^2+a^2)^3/2, but this doesn't seem to work.
    Many thanks if you could help me!
  2. jcsd
  3. Jan 25, 2004 #2
    The formula is correct might be some Arithmetic error
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