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Homework Help: Torque on a loop of wire carrying a current

  1. Feb 16, 2005 #1
    A 0.477 m length of wire is formed into a single-turn, square loop in which there is a current of 13.5 A. The loop is placed in a magnetic field of 0.124 T, as shown in the figure below. What is the maximum torque that the loop can experience?

    if i had the area i could figure it out
     
  2. jcsd
  3. Feb 16, 2005 #2

    Doc Al

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    Staff: Mentor

    But you know it's a square and you have its circumference!
     
  4. Feb 16, 2005 #3


    YOu can figure out what is the length of the sides of the square from the given information.
     
  5. Feb 16, 2005 #4
    how am i to fig out N? t=NIABsin90
     
  6. Feb 16, 2005 #5

    Doc Al

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    N is the number of turns.
     
  7. Feb 16, 2005 #6
    that's wut i thought
    t=(1)(13.5A)(0.014m2)(0.124)(sin90)
    t=0.023 N*m

    i did something wrong somewhere
     
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