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1. How do the saturated drift velocity value and the critical field for velocity saturation vary with dopant impurity concentration? Give the fundamental reasons.

2. At what electric field will the drift velocity noise become comparable with the thermal noise? Assume the rms fluctuation of the free time is (i) 1% and (ii) 100% of the mean free time. Which is a better assumption and what is the physical basis.

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  • Category:- Physics
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