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Field str. at surface of wire

  1. Sep 24, 2008 #1
    b]1. The problem statement, all variables and given/known data[/b]

    What is the magnetic field strength 0.10 from the axis of a 1.0--diameter wire carrying 5.0 distributed uniformly over its cross section?
    The answer is 4G I got the part right
    Part B

    What is the field strength at the surface of the wire?
    I got this wrong....

    2. Relevant equations

    I got .001 I used the eqn (I cant find the symbol) but its the pereability consant...
    so... (u_0_)(I)/2*pi*r


    I got .001....
  2. jcsd
  3. Sep 24, 2008 #2


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    Science Advisor
    Gold Member

    Please provide the units in the statement of the problem.
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