Drift current practice problems

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A piece of silicon is n-type with a uniform donor doping concentration of *N _{D}* = 8.0e+17 cm

^{-3}.

The electron mobility is

*μ*= 269 cm

_{n}^{2}/Vs.

What are the conductivity and resistivity of this silicon?

A resistor is made using this silicon. The resistor's dimensions are *W* = 40 μm, *L* = 80 μm, *t* = 2 μm.

What is the resistance of the resistor?