Dave Pierson wrote:
It's really weird that skin effect applies only to the outer surface of a tube, but this happens. The reason is not the repulsion of charges, as the tube can be at zero potential and the effect still happens. The reason is the (ideal) absence of magnetic field inside the tube. Current is always associated with a magnetic field around it. No field at the inner surface = no current too.I do not see why current would pass on a flat strips both sides but not both sides of a copper tube.Like charges repel. The concept of an inside and an outside to a conductor is not commonly taught. Consider, as a tubular example, a piece of coax cable. Whats inside (in this case) STAYS inside: minimal current on the outside. In the case under discussion: a 'typical solenoid primary' (or secondary, come to that) the current is applied to the outside. Thought will lead to experiments, which will demonstrate the effect.
Antonio Carlos M. de Queiroz _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla