Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

As shown in the figure, two long straight wires are separated by a distance of d

ID: 2031039 • Letter: A

Question

As shown in the figure, two long straight wires are separated by a distance of d0.4 m. The currents are /13.0 A to the right in the upper wire and /27.0 A to the left in the lower wire. What are the magnitude of the magnetic field at point P, which is a distance d2-0.20 m below the lower wire? (Ho-4m 10' T·m/A) d/h Express your answer using two significant figures. Submit Request Answer Part B What are the direction of the magnetic field at point P? disced ou f theplane f he sn drecte into tne of the sate

Explanation / Answer

a) Bnet = mu0 i1/ 2 pi d1 - mu0 i2/ (2 pi d2)

Bnet = [4 pi * 10-7 * 3 / (2 pi * (0.40 + 0.2)) ] - [4 pi * 10-7 * 7 / (2 pi * 0.2)]

= (1.00 - 7.00) * 10-6

Bnet = 6.00 * 10-6 T

b) direction is out of the plane of the screen