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Flux (douglas) magnetization

  1. Dec 7, 2004 #1
    Find the magnetic flux crossing the portion of the plane
    theta = x/4 defined by 0.01 m < r <0.05 m and 0 m < z < 2 m. A current of 2.50 A is flowing along z-axis along a very long wire.

    in drawing the picture i know that there is a long thin wire with a current of 2.5 amps flowing positively on the z-axis and the plane is lying rotated at an angle of pi/4 with the magnetic field flowing in a counter clockwise direction.

    How do I go about finding the magnetic flux.
    Please help.
     
  2. jcsd
  3. Dec 9, 2004 #2

    Astronuc

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    Staff: Mentor

    Well first one has to find the magnetic field (B) at some distance r from the conductor.

    This problem is a little complicated since one has a plane tilted at 45° from the plane passing through the conductor. If the plane was verticle, then the magnetic field would simply be a function of r.

    But since the plane is tilted, as one ascends the plane, the distance from the conductor increases.

    So can you write an equations for the distance of a point on the plane from the conductor.

    Now since the plane is tilted pi/4 or 45°, a point on the tilted plane is a distance z from the vertical plane, so the distance (d) from the conductor is just d=sqrt(r^2+z^2).

    See if can use that with the definition of magnetic flux.
     
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