Conventional Current assumes that current flows out of the positive terminal, through the circuit and into the negative terminal of the source. Electron Flow is what actually happens and electrons flow out of the negative terminal, through the circuit and into the positive terminal of the source.
the resistor only allows 20 beans to pass.
Physicists use Electron Flow
the speed of the electrons in a thin wire are much faster than the speed of the same current flow in a thick wire.
so, if your power is 9 volts or 8,000 volts, the resistor only allows 20 beans to pass.
back to relativity. if you need.......
Physicists use Electron FlowReal people use Current/Traditional/Ben Franklin FlowI would try and ignore Electron Flow unless you are specifically wanting to get deep into the physics aspect of it. Or you are trying to do Semi-conductor/material science.
The physicists, once aware of their basic error invented 'hole flow' so they could continue to believe (in error) that current flows from positive to negative.