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Two very long, straight, parallel wires carry currents that are directed perpendicular to the page as...

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Two very long, straight, parallel wires carry currents that are directed perpendicular to the page as shown in Figure P30.9. Wire 1 carries a current 1. into the page (in the -z direction) and passes through the x axis at x = -2a. Wire 2 passes through the x axis at x = -+a and carries an unknown current 12. The total magnetic field at the origin due to the current-carrying wires has the magnitude 2PoIi / ( 2 pira ). The current I2 can have either of two possible values.Figure P30.9 (a) Find the value of Iz with the smaller magnitude, stating it in terms of Ii and giving its direction. I2 = (b) Find the other possible value of I2. I2 =
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