I'm totally screwed up. Please help?!?

Question

I was reviewing my notes about Schematic diagrams and found that it's saying that "Cell (the long bar is the positive end)".

I've been thinking that the shorter bar reprsent positive end, and electricity goes from negative end to positive end (the longer bar to shorter bar), so I always drew Schematic diagram based on that.

(eg, when it said to draw a switch that turn off everything, I drew it just after the longer bar which I've been thinking to be the negative end.)
I even got full mark for drawing them.

Now, I'm totally screwed.
Could you please explain what's happened??!

Answer 1

[| [| where the [ stands for a long bar is the proper way to show a potential source like a battery. The flow of current in electricity is opposite to the flow of electrons, since the original idea was to have an analogy to liquid flow, where liquid flows from a high potential source to a lower potiential level.

Answer 2

The Longer bar is always the positive end. Period

But INSIDE the cell, the electrons actually flow opposite to the direction followed in the circuit. Electrons in the circuit flow from -ve to +ve

HOWEVER, the flow of electrons is not the flow of current. Current flows opposite to the flow of electrons. Current can be thought of as the flow of +ve charge

And a switch can be used no matter where you place it
As it is in series, if you open that switch, all current flow in the circuit will stop, so it doesnt matter where the switch is as long as it is in series

Answer 3

My guess is that it's not completely important unless you're an electrical engineer. My physics teacher told us that for schematic purposes it's not entirely important. Granted I just finished high school physics so I'm not an expert. Good Luck I wish I could've been more help.