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The wire in the drawing carries a current of 12 A. Suppose that a second long, straight wire is placed right next to this wire.

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The wire in the drawing carries a current of 12 A. Suppose that a second long, straight wire is placed right next to this wire. The current in the second wire is 41 A. Use Ampere's law to nd the magnitude of the magnetic eld at a distance of r = 0.54 m from the wires when the currents are (a) in the same direction and (b) in opposite directions. Circular path (a) Number ZOE-5 Units The drawing shows four insulated wires overlapping one another, forming a square with 0.050-m sides. All four wires are much longer than the sides of the square. The net magnetic field at the center of the square is 92 uT directed into the drawing. Calculate the current 1. 2.6 A 7.2 A 5.4 A Number i Units

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