Charge Carrier Drift Speed
v = I/(n_d·A·q)
What it says
How slowly charge carriers actually crawl along a wire, even though the signal is near light speed.
Symbols
| Symbol | Quantity | Dimension |
|---|---|---|
v | Drift speed (m/s) | L T^-1 |
I | Current (A) | I |
n_d | Carrier density (1/m^3) | L^-3 |
A | Cross-sectional area (m^2) | L^2 |
q | Carrier charge (C) | T I |
Work it out
Enter what you know. No account needed.
Fill in all but one: I, n_d, A, q, v are all empty.
Filed under Electromagnetism · derive through it in the explorer