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Magnetic directions

  1. Apr 1, 2009 #1
    1. The problem statement, all variables and given/known data
    A wire 3.0 cm long lies perpendicular to a magnetic field with a magnetic induction of 0.40 T. Calculate the force on the wire if the current is 5.0 A. What is the direction of force?


    2. Relevant equations

    F=BIL

    3. The attempt at a solution

    I found the force to be .06 N but I have no idea how to find the direction.



    1. The problem statement, all variables and given/known data
    A wire 1.5 m long is at right angles to a magnetic field.

    a. What is the magnetic induction of the field if the force on the wire is 1.5 N and the current is 0.050 A?

    b. What is the force on the wire if it is rotated 90 degrees?

    2. Relevant equations

    F=BIL

    3. The attempt at a solution

    a. The answer is 20 Teslas.

    b. I have no idea? Would it be zero because they are not perpendicular any more?
     
  2. jcsd
  3. Apr 1, 2009 #2

    rl.bhat

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    Homework Helper

    I have no idea how to find the direction.
    Perpendicular to the plane containing wire and magnetic field.
    I have no idea? Would it be zero because they are not perpendicular any more?
    It depends upon how the wire is rotated.
     
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