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Magnitude of Magnetic force on Wire

  1. Oct 24, 2011 #1
    An isolated segment of wire of length L=4.50 m carries a current of magnitude i=35.0 A at an angle theta=50.3 degrees with respect to a constant magnetic field with magnitude B= 6.70E-2 T. What is the magnitude of the magnetic force on the wire?
    a) 2.66 N
    b) 3.86
    c) 5.60 N
    d) 8.12 N
    e) 11.8 N
    What I did was:
    F=ILxBsin(theta)
    =(35.0A)(4.50m)*( 6.70E-2T * sin(50.3 degrees))
    I got 8.12 N but I checked on the back of the book and it says that the answer is (e) but I dont know how to get that.
     
  2. jcsd
  3. Oct 24, 2011 #2
    Your answer is OK
     
  4. Oct 24, 2011 #3

    Redbelly98

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    I agree that 8.12 N is correct. It looks like the book has an error here.
     
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