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Homework Help: Loop current / torque

  1. Feb 24, 2010 #1
    1. The problem statement, all variables and given/known data
    A rectangular loop of 260 turns is 33 cm wide and 17 cm high.
    What is the current in this loop if the maximum torque in a field of 0.49 T is 24 N m?


    2. Relevant equations

    torque (t) = NIABsintheta

    3. The attempt at a solution
    I'm not actually sure if this is even the correct equation. It was the closest one I could find with most of the variables. If it is the correct one, how do you find sin? Thanks for the help
     
  2. jcsd
  3. Feb 24, 2010 #2

    rl.bhat

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    Homework Helper

    The torque is maximum when theta is pi/2.
     
  4. Feb 25, 2010 #3
    i have no idea what that means
     
  5. Feb 25, 2010 #4

    rl.bhat

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    Homework Helper

    The torque is maximum when theta is pi/2. So that sin(pi/2) = 1.
     
  6. Feb 25, 2010 #5
    oh ok. thanks
     
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