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Simple expressions for the magnetic field generated by the flow of low-frequency AC current through nonmagnetic conductors (defined as having relative permeability around 1) are determined in the realistic setting where such conductors are of finite length, for the following three cases: solid cylinder, tubular conductor, coaxial cable. The solutions obtained here are applied to the limiting situations...
A conceptually simple result, which was recently derived for the circulation of the magnetic field created by a finite portion of wire carrying a slowly varying current, is used with the superposition principle and symmetry considerations to obtain an expression for the magnetic field of a thin cylindrical shell of finite length. This expression is combined with a new formula for an oblique solid...
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