Question: Four very long, current carrying wires in the same plane intersect to form a square 40.0 cm on each side, as shown in Fig. Find

Four very long, current carrying wires in the same plane intersect to form a square 40.0 cm on each side, as shown in Fig. Find the magnitude and direction of the current I so that the magnetic field at the center of the square is zero.

10.0 A 8.0 A 20.0 A

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