Problem C3: The figure above shows a cylindrical wire of radius R. The wire is infinitly long and has a total current I. The current I is uniformly distributed in the wire. What is the ratio of the magnetic field B1 at the point r1=R/n1 to the magnetic field B2 at the point r2=n2R? That is, if B1/B2 = n3, what is n3?

n1 = n2 = Input n3:
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