Drift current practice problems

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Read the Drift current class notes.

A piece of silicon is *n*-type with a uniform donor doping concentration of *N _{N}* = 6.0e+15 cm

^{-3}.

The electron mobility is

*μ*= 1.25e+3 cm

_{n}^{2}/V·s.

What are the conductivity and resistivity of this silicon?

You would like to make rectangular resistor with value *R* = 27 kΩ in this silicon.

The resistor's cross-sectional dimensions are: *W* = 4 μm and *t* = 1.33 μm.

What length should the resistor have?