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A Long Straight Wire Carries a Constant Current I μ\mu 0/4 π\pi

Question 2

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   A long straight wire carries a constant current I. The magnitude of the magnetic flux through the illustrated rectangular loop of wire is A)  ( \mu <sub>0</sub>/4  \pi ) 2Il ln(b/a)  B)  ( \mu <sub>0</sub>/4  \pi ) 4Il ln(b/a)  C)  ( \mu <sub>0</sub>/4  \pi ) Il ln[(a + b) /(b - a) ] D)  ( \mu <sub>0</sub>/4  \pi ) 4Il ln[(b - a) /(b + a) ] E)  ( \mu <sub>0</sub>/4  \pi ) 2Il ln[(b - a) /(b + a) ] A long straight wire carries a constant current I. The magnitude of the magnetic flux through the illustrated rectangular loop of wire is


A) ( μ\mu 0/4 π\pi ) 2Il ln(b/a)
B) ( μ\mu 0/4 π\pi ) 4Il ln(b/a)
C) ( μ\mu 0/4 π\pi ) Il ln[(a + b) /(b - a) ]
D) ( μ\mu 0/4 π\pi ) 4Il ln[(b - a) /(b + a) ]
E) ( μ\mu 0/4 π\pi ) 2Il ln[(b - a) /(b + a) ]

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