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Mobilities of electorns and holes in a s...

Mobilities of electorns and holes in a sample of intrinsic germanium at room temperature are `0.54m^(2)V^(-1)s^(-1)` and `0.18m^(2)V^(-1)s^(-1)` respectively.
If the electron and hole densities are equal to `3.6xx10^(19)m^(-3)` calculate the germanium conductivity.

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