Three long parallel wires are at the corners of a square, as shown in the figure

Question

Three long parallel wires are at the corners of a square, as shown in the figure below. The wires each carry a current I. (Use pi for , mu_0 for 0, I and L as necessary. Choose the coordinate system with its origin at the lower left-hand corner of the square, the positive x axis to the right and the positive y axis upward.)

(a) Find the magnetic field at the unoccupied corner of the square when all the currents are into the page.

(b) Find the magnetic field at the unoccupied corner of the square when I1 and I3 are into the page and I2 is out.

(c) Find the magnetic field at the unoccupied corner of the square when I1 and I2 are into the page and I3 is out.

Explanation / Answer

http://www.cramster.com/answers-jun-08/physics/long-parallel-wires-corners-square_272487.aspx this has been answered before. Best regards

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