Find the resistance of an intrinsic germanium rod 1 cm long, 1 mm wide and 1 mm thick at 300 K. The intrinsic carrier density is 2.5 x 10^19/m^3 at 300 K and the mobility of electrons and holes are 0.39 and 0.19 m^2/V-s. (Ans: 4.31 x 10^3)Calculate the position of the Fermi level E and the conductivity at 300 K for a germanium crystal containing 5 x 10^10 arsenic atoms/m^3. Also, calculate the conductivity if the mobility of the electron is 0.39 m^2/V-s.
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