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Two long wires are aligned parallel to each other and separated by 20.0 cm. One wire...

Two long wires are aligned parallel to each other and separated by 20.0 cm. One wire carries a current, I1and the other carries a current I2 in the opposite direction, where for the current magnitudes, I2 = 3 I1. The magnitude of the magnetic field at a point midway between the wires is 4.0 μT. Determine I2.

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