Question

The equation for Electron Drift Velocity is given as Vd=(e/m)*E*tau what does (e/m) stand for?

Answer 1

e = charge on electron
m = mass of electron

Answer 2

So it's a constant?

Answer 3

Yes.

Answer 4

So it's equal to approx -1.6e^-19/9.1e^-31

Answer 5

Yes, and indeed, it's negative, even though normally we think of e as an absolute quantity.