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Homework Help: Two parallel non conducting rings

  1. May 11, 2012 #1
    1. The problem statement, all variables and given/known data

    Figure 22-42 shows two parallel nonconducting rings with their central axes along a common line. Ring 1 has uniform charge q1 and radius R; ring 2 has uniform charge q2 and the same radius R. The rings are separated by a distance 3.00R. The ratio of the electric field magnitudes of Ring 1 and Ring 2 at point P on the common line is 2.87. What is the ratio of charge magnitudes q1/q2?

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. May 11, 2012 #2


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    Welcome to PF!

    Hi SOS2012! Welcome to PF! :smile:

    (where is P ? :confused: and try using the X2 button just above the Reply box :wink:)

    Show us what you've tried, and where you're stuck, and then we'll know how to help! :smile:
  4. May 11, 2012 #3
    Re: Welcome to PF!



    thats the equations i have but i dont know how i would use them in order to get the ratio of q1/q2
  5. May 11, 2012 #4


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    (where is P, and what is d ? :confused:)

    why can't you find q1/q2 just by dividing?​
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