Question 48

A small amount of phosphorus is added to silicon so that there are $$2.5 \times 10^{17}$$ conduction electrons per cubic meter and $$9.0 \times 10^{14}$$ holes per cubic meter. Let $$\mu_e = 0.13 m^2/V.s$$ and $$\mu_h = 0.05 m^2/V.s.$$ The resistivity in $$Ω-m$$ will be


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