Physics, 05.11.2020 16:50 muncyemily

A wire of circular cross-section carries current density that is not uniform but varies with distance from the center as j(r) = A r / R, for radius r in the range 0 < r < R. Here, A is a constant with units amperes per square meter, and the radius of the wire is R = 8.1 mm. Find an expression for the magnetic field outside of the wire, for r > R.

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A wire of circular cross-section carries current density that is not uniform but varies with distanc...