A question about an electron’s movement in a DC circuit

[Nugatory]

I got the poit now. The higher the voltage, the faster the electrons move. Thank you

But be careful here and reread @mitochan’s post #3 in this thread about drift velocities. It’s the drift velocity that’s increasing with the voltage, not the speed the electrons are moving at. (The drift velocity is, loosely speaking, the difference between the average speed when they’re heading one direction and when they’re heading the other direction as they bounce randomly around)

 

[Tiger]

But be careful here and reread @mitochan’s post #3 in this thread about drift velocities. It’s the drift velocity that’s increasing with the voltage, not the speed the electrons are moving at. (The drift velocity is, loosely speaking, the difference between the average speed when they’re heading one direction and when they’re heading the other direction as they bounce randomly around)

Yes. I got that. The velocity they randomly move around is very fast but the drift velocity as current is much lower，which is related to the voltage in the circuit. Thank you guys. Merry Christmas and Happy New Year.

 

[vanhees71]

But be careful here and reread @mitochan’s post #3 in this thread about drift velocities. It’s the drift velocity that’s increasing with the voltage, not the speed the electrons are moving at. (The drift velocity is, loosely speaking, the difference between the average speed when they’re heading one direction and when they’re heading the other direction as they bounce randomly around)

The drift velocity is the macroscopic velocity of the "electron fluid", i.e., it's a quantity averaged over macroscopically small but microscopically large "fluid elements", i.e., the thermal motion is averaged out.