Two long, straight wires are perpendicular to the plane of the paper and at a distance of 0.2 m from each other, as shown in the figure. The wires carry currents of I1 = 2.8 A and I2 = 5.2 A in the direction indicated (out of the page). Find the magnitude and direction of the magnetic field (in µT) at a point A midway between the wires.
Added by Rosa Z.
Step 1
8 \, A \) is the current in wire 1, and \( r = 0.1 \, m \) is the distance from wire 1 to point A. \[ B_1 = \frac{4\pi \times 10^{-7} \cdot 2.8}{2\pi \cdot 0.1} = 4.40 \times 10^{-6} \, T \] Show more…
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