Originally Posted by David M
On any circuit, the total current being supplied is exactly the same as the current going back to negative or ground or neutral. Don't think of electrons the same way you think of fuel, where the fuel flows only or mostly in one direction. Also, technically, electrons flow from negative to positive although by convention we think the opposite way.
Close, but no cigar. Yes, electrons flow as you describe. However, back in the days of yesteryear (no Lone Ranger) , Ben Franklin started the confusion by declaring the direction of charge flow, positive to negative in his wax to wool experiments. Of course he was incorrect but it stuck.
I believe it was the IEEE that resolved this confusion of how electrons/current flow way back in the 50's by separating how one should compare electrons and current with a fiat that declared current flow to be from positive to negative leaving electron flow as it should be, negative to positive. Incidentally, if you look at a symbol for the common diode you will note that the arrow head
points to the direction of current, not electrons.