Mobilities of electrons and holes in a sample of intrinsic germanium at room temperature are 0.36 m 2 V − 1 s − 1 and 0.17 m 2 V − 1 s − 1 . The electron and hole densities are each equal to 2.5 × 1 0

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Mobilities of electrons and holes in a sample of intrinsic germanium at room temperature are 0.36 m 2 V − 1 s − 1 and 0.17 m 2 V − 1 s − 1 . The electron and hole densities are each equal to 2.5 × 1 0 19 m 3 . The electrical conductivity of germanium is

TestHub · Accepted Answer

As we know, conductivity, σ = ρ 1 ​ = ρ ( μ e ​ n e ​ + μ n ​ n n ​ ) = 1.6 × 1 0 − 19 [ 0.36 + 0.17 ] ( 2.5 × 1 0 19 ) ] = 2.12 Sm − 1 ​

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