Problem: In the figure below, the two long straight wires are separated by a distance of d = 0.40 m. The currents are I1 = 1.0 A to the right in the upper wire and I2 = 8.0 A to the left in the lower wire. What is the magnitude and direction of the magnetic field at point P, that is distance d/2 = 0.20 m below the lower wire?Note: μ0 = 4π x 10-17 T x m/AA. B = 7.7 x 10-6 T, directed into the plane of the page.B. B = 8.3 x 10-6 T directed into the plane of the page.C. B = 7.7 x 10-6 T directed out of the plane of the page.D. B = 8.3 x 10-6 T directed out of the plane of the page.

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Problem Details

In the figure below, the two long straight wires are separated by a distance of d = 0.40 m. The currents are I1 = 1.0 A to the right in the upper wire and I2 = 8.0 A to the left in the lower wire. What is the magnitude and direction of the magnetic field at point P, that is distance d/2 = 0.20 m below the lower wire?
Note: μ0 = 4π x 10-17 T x m/A

A. B = 7.7 x 10-6 T, directed into the plane of the page.

B. B = 8.3 x 10-6 T directed into the plane of the page.

C. B = 7.7 x 10-6 T directed out of the plane of the page.

D. B = 8.3 x 10-6 T directed out of the plane of the page.

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Our tutors have indicated that to solve this problem you will need to apply the Magnetic Field Produced by Straight Currents concept. You can view video lessons to learn Magnetic Field Produced by Straight Currents. Or if you need more Magnetic Field Produced by Straight Currents practice, you can also practice Magnetic Field Produced by Straight Currents practice problems.

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Based on our data, we think this problem is relevant for Professor Lumata's class at UTD.