Because the outer electrons orbit further from the nucleus, the forces ... are poor conductors because they have very few free electrons. This makes it difficult for electrical current to flow ...

IN a paper entitled “Eddy Current Losses in Single-Conductor Paper-Insulated Lead-Covered Un-armoured Cables of a Single-Phase System“(J. Inst. Elec. Eng., 89, Pt. 2, No. 12 ; December 1942 ...