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Design a resistor that carries a current of 5mA with applied voltage of 5V

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An n-type Si resistor is to be designed so that it carries a current of 5mA with an applied voltage of 5V. T=300K. Mn*=.26M0. M0=9.11x10^31Kg.

(a) If Nd=10^15/cm^3 and Na=0, design a resistor to meet the required specifications.
(b) If Nd=3x10^16/cm^3 and Na=2.5x10^16/cm^3, redesign the resistor.

What are the answers and how did you calculate them?

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The solution carefully explains and designs a resistor that carries a current of 5mA with applied voltage of 5V.

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The problem gave you Mn, it looks like it wants you to get electron/hole mobility from effective electron/hole mass and mean scattering time. However, the mean scattering time is not ...

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