The long, thin wire shown in the figure (Figure 1) is in a region of constant ma
ID: 1580878 • Letter: T
Question
The long, thin wire shown in the figure (Figure 1) is in a region of constant magnetic field B. The wire carries a current of 6.2 A and is oriented at an angle of 7.5 to the direction of the magnetic field. Part A If the magnetic force exerted on this wire per meter is 3.6x102 N, what is the magnitude of the magnetic field? Express your answer using two significant figures. B= 44 mT Previous Answers Correct Figure 1of1 Part B At what angle will the force exerted on the wire per meter be equal to 1.5x10 2 N? Express your answer using two significant figures 1-62 A 7.5° Submit Previous Answers Request AnswerExplanation / Answer
a) F = i * B * l * sin theta
(F/l) = i * B * sin theta
B = (F/l) / (i * sin theta) = (3.6 * 10-2) / (6.2 * sin 7.5)
B = 44.5 mT
b) sin theta = F/ i B l
theta = sin-1( F / i B l)
= sin-1(1.5 * 10-2 / 6.2 * 44 * 10-3)
theta = 3.1o
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