Conventional current flow is logical

摘要

I am compelled to comment on the letter"Electron Flow Versus Conventional Current Flow"(SILICON CHIP,July 2007).In simple terms,if one considers electron flow,then upon connection of an external circuit to a DC voltage source,the positive terminal of the source can be said to attract an electron which,once moved,leaves a positively-charged"hole"in its place.Another electron in the string will move into this"hole"and,in turn,leave a hole in its place,and so on.