Drift current calculation drift verlocity not given

[integrash]

Calculate drift current.
length of wire 1m for 10V
cross sectional area = 0.001m^2
e = 1.602 x 10^-19
ue = 3.18 x 10^-7
n = 10^23 electrons / m^3


what does ue stand for?
how do i calculate drift verlocity?

3. The Attempt at a Solution

i am using the formula

I = nAVq
where I = current
n = number of charged particles per unit volume (10^23)??
A = cross sectional area (0.001)
V = drift verlocity

drift verlocity = ue (3.18 x 10^-7) x charge dencity (charge dencity = 10^23 x 1.602 x 10^-19)

Q = charge on each particle (1.602 x 10^-19)

therefore

I = (10^23) x (0.001) x (3.18 x 10^-7 x 10^23 x 1.602 x 10^-19) x (1.602 x 10^-19)

I = 0.08161 A

or 81.61 mA

No idea if any of this is correct please help

Many thanks

Rob.

 

[ehild]

ue is the mobility of the electrons in the wire, and you get the drift velocity by multiplying mobility with the electric field strength.

http://en.wikipedia.org/wiki/Electrical_mobility

ehild

 

[RTW69]

I believe that u*e is the drift velocity in m/s where u is "mu" the electron mobility and "e" is the electric field.

Solve for I

http://en.wikipedia.org/wiki/Drift_velocity