A current i in a circular loop of radius b produces a magnetic field. At a...

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A current i in a circular loop of radius b produces a magnetic field. At a fixed points 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. ib2 C. 126 D. i/b E. i/b2 A current i in a circular loop of radius b produces a magnetic field. At a fixed points 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. ib2 C. 126 D. i/b E. i/b2

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