Four long, parallel conductors carry equal currents of I = 7.50 A. The figure be

Question

Four long, parallel conductors carry equal currents of I = 7.50 A. The figure below is an end view of the conductors. The current direction of the current is into the page at points A and B (indicated by the crosses) and out of the page at C and D (indicated by the dots). Calculate the magnitude and direction of the magnetic field at point P, located at the center of the square of edge length 0.200 m.
_____µT

Direction?

to the left, to the right, upward, downward, into the monitor, or out of the monitor

Explanation / Answer

B = -4uicos45 / 2pixd j

d= a/sqrt (2)

substituting given values we get

B = -30 uT j ( downward)

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