ABSTRACT
Scientists and engineers use several techniques in solving continuum or field problems. Loosely speaking, these techniques can be classified as experimental, analytical, or numerical. The whole subject of electromagnetics (EM) unfolds as a logical deduction from eight postulated equations, namely, Maxwell's four field equations and four medium-dependent equations. The two fundamental laws governing these electrostatic fields are Gauss's law, which is a direct consequence of Coulomb's force law, and the law describing electrostatic fields as conservative. The basic laws of magnetostatic fields are Ampere's law, which is related to Biot-Savart law, and the law of conservation of magnetic flux. In terms of the solution region or problem domain, the problem could be an interior problem, also variably called an inner, closed, or bounded problem, or an exterior problem, also variably called an outer, open, or unbounded problem. EM problems are classified in terms of the equations describing them. The equations could be differential or integral or both.
