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FARS is reviewed here, and a procedure denoted as the Incremental Induced Electromotive Force (IIEMF) method is presented to prove the validity of FARS. An extension of the classical IEMF method, IIEMF involves determining the pairwise near-field power interaction between current samples on a PEC (perfect electrically conducting) object or a specified current. The IIEMF method not only validates FARS, but also provides an alternate method for determining the spatial distribution of radiation originating from such sources. The IIEMF formulation is based on the dyadic Green's function. Some representative numerical results are included, to demonstrate and compare the two techniques.