Low-frequency induction in a homogeneous sphere by line sources 2. Line charge excitation and discussion

The problem of low-frequency induction in a sphere by an external line sour ce is amenable to analytic solution by Stevenson's method. This second of t wo parts develops the complete electromagnetic field solution, through firs t order in frequency, for (electric) excitation by zeroth- and first-order line charge sources. The solutions can largely be expressed in terms of ele mentary functions. The result serves as a useful test solution for low-freq uency electromagnetic modeling codes involving nonuniform sources, and in p articular for applications involving power lines. The solution is also appl icable to a small sphere in the extreme near field of a linear antenna elem ent.