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HELP with current in loops and solenoids

  1. Feb 20, 2008 #1
    1. The problem statement, all variables and given/known data
    You have a 1.1-m-long copper wire.You want to make an N-turn current loop that generates a 1.66 mT magnetic field at the center when the current is 1.01 A. You must use the entire wire. What will be the diameter of your coil?


    2. Relevant equations



    3. The attempt at a solution
    I figured that this is a solenoid so I tried starting off by finding the number of turns it would take by using this equation...
    LB/UI = N
    The U is Mue 1.257x10^-6
    I got 1438.28
    but now I don't know what to do?
     
  2. jcsd
  3. Feb 20, 2008 #2
    does anyone know what to do for this problem?
     
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