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A current i in a circular loop of radius b produces a magnetic field. At a fixed point far from the loop, the strength of the magnetic field is proportional to which of the following combinations of i and b? (A) ib (B) ib? (C) Pb (D) (E) a

A current i in a circular loop of radius b produces a magnetic field. At a fixed point far from the loop, the strength of the magnetic field is proportional to which of the following combinations of i and b? (A) ib (B) ib? (C) Pb (D) (E) a

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65. A current i in a circular loop of radius b produces a magnetic field. At a fixed point far from the loop, the strength of the magnetic field is proportional to which of the following combinations of i and b? (A) ib (B) ib? (C) #b (D) (E)
Transcribed Image Text:65. A current i in a circular loop of radius b produces a magnetic field. At a fixed point far from the loop, the strength of the magnetic field is proportional to which of the following combinations of i and b? (A) ib (B) ib? (C) #b (D) (E)
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