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Homework Help: Electrical Fields

  1. Mar 3, 2010 #1
    1. The problem statement, all variables and given/known data
    Find the electrical field a distance of 2.09 ± 0.02 m from a charge of 1.82 ± 0.03 µC.
    What is the uncertainty?

    2. The attempt at a solution
    I was able to answer part one correctly. Very easy. However, I am not sure of how to find the uncertainty
  2. jcsd
  3. Mar 3, 2010 #2


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    What are the possible range of values that you can calculate for the electric field given the tolerance of your parameters?
  4. Mar 3, 2010 #3


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    Do you know how to combine errors? If not, try this:

    http://home.clara.net/rod.beavon/err_comb.htm [Broken]
    Last edited by a moderator: May 4, 2017
  5. Mar 3, 2010 #4
    i dont understand what you mean
  6. Mar 6, 2010 #5


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    I don't know about ideasrule suggestion but if I wanted to find the error, then I would say that the mean value would be calculated off of the nominal values given. Then, given the tolerance on these nominal values, what is the largest and smallest possible electric field? This would be the limits of the deviation from your calculated nominal value.
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