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Magnetic Field Along a Straight Wire with Current

  1. Nov 19, 2013 #1
    1. The problem statement, all variables and given/known data
    Find the magnetic field 4.0 cm from a very long, straight wire that carries a current of 17.0 A.
    2. Relevant equations

    I don't know what equation to use



    3. The attempt at a solution
    I tried to find the equation for this question
     
    Last edited: Nov 19, 2013
  2. jcsd
  3. Nov 19, 2013 #2

    rude man

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    Homework Helper
    Gold Member

    Try ampere's law.
     
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