Drift Velocity (1 Viewer)

[icecoffee]

Was this taken out of the syllabus?

Do we need to know the formula and the effect of impurities/cross-sectional area.... on current flow and drift velocity?

 

[henry08]

I'm pretty sure we still need to know about this.

 

[icecoffee]

Even the formula?

 

[henry08]

I guess not.

Syllabus says
"compare qualitatively the relative number of free electrons that can drift from atom to atom in conductors, semiconductors and insulators"

 

[icecoffee]

Oh i was looking at superconductors but thanks! Guess i don't need the forumla then. =D

 

[samwell]

Oh i was looking at superconductors but thanks! Guess i don't need the forumla then. =D

Is drift velocity the velocity of electrons as they move through a substance. And the velocity is rarely the same as colllisions with positive charges usually reduce their velocities.
Not sure cause the books i used didnt seem to go into much detail abt the drift velocity in super and semi conductors.