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Homework Help: Need help with Daughters physics homework

  1. Apr 1, 2004 #1
    Need some help here quick, needs to be turned in in the morning...How do we find the magnitude of the magnetic force from a straight wire with a 12 amp current flowing thru it at a distance of .11 meters? Any help here would be greatly appreciated...Thanks
     
  2. jcsd
  3. Apr 1, 2004 #2

    Cliff_J

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  4. Apr 1, 2004 #3

    Janitor

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    For further edification--

    I believe the equation in Cliff's link is derived from the Biot-Savart law and considerations of cylindrical symmetry of a straight conductor.
     
  5. Apr 2, 2004 #4
    [tex] F = \frac {4\pi10^{-7}I} {2\pi d}[/tex]

    where
    I=current
    F=force
    d=distance from wire
     
  6. Apr 2, 2004 #5
    in order to find the direction of the force you must apply your "right hand" rules. let me know if you need help.
     
  7. Apr 3, 2004 #6
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