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Homework Help: How to find the angle between wire and magnetic field

  1. Apr 14, 2008 #1
    1. The problem statement, all variables and given/known data

    A wire of length 0.655 m carries a current of 21.0 A. In the presence of a 0.470-T
    magnetic field, the wire experiences a force of 5.46 N. What is the angle (less than
    90degrees) between the wire and the magnetic field?


    2. Relevant equations

    Is there a special formula to solve this equation?
    If what I have done below is correct, how do I find Theta if all I know is
    the sin of Theta?

    3. The attempt at a solution
    I used the equation F=BILsinTheta
    5.46=.655m*21.0A*.470T*sinTheta
    5.46=6.46485*sinTheta
    5.46/6.46485=sinTheta
    .844567 = sinTheta
     
  2. jcsd
  3. Apr 14, 2008 #2

    Nabeshin

    User Avatar
    Science Advisor

    Err... How far along are you in math? Have you ever encountered inverse trig functions?
     
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