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Homework Help: Force on current carrying conductor

  1. Aug 10, 2009 #1
    1. The problem statement, all variables and given/known data

    A 20cm wire carrying a current of 10A is placed in a uniform
    magnetic field of 0.3T. If the wire makes an angle of 40 degrees with
    the direction of magnetic field, find the force acting on the wire.

    2. Relevant equations

    F=LIB sin<theta>

    3. The attempt at a solution

    I got the answer:: 0.35, but in the textbook, the answer written at the back is 0.39....which one's correct??
  2. jcsd
  3. Aug 10, 2009 #2
    Rounding my answer down I agree with the book.I bet you punched the wrong calculator button when you was working out the sin.Sin40=0.643
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