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Magnetic field due to many wires

  1. Dec 7, 2013 #1
    Say I have three parallel wires facing north east that run through a square. The first wire goes through the top right edge. The next wire goes through the top left edge and the last wire goes through the bottom left edge. There is a point on the last edge of the square.

    When calculating the magnetic field on the point, do the wires affect each other's magnetic field's effect on p? I am also having trouble setting up the direction of where the magnetic field.
  2. jcsd
  3. Dec 7, 2013 #2


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    Staff: Mentor

    No. Calculate the field produced by each wire, and then add them together as vectors. This is the "principle of superposition."

    Use the right-hand rule to determine the direction of each individual wire's magnetic field at p. As noted above, you add those fields together as vectors.
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