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Statement of a problem № 10771

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The wire in Figure 21.37 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 28 A. Use Ampère s law to find the magnitude of the magnetic field at a distance of r = 0.72 m from the wires when the currents are (a) In the same direction and (b) In opposite directions. Figure 21.37




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