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An Si resistor is at 300Kelvin, and is 100μm long, 1μm thick, 5μm wide. The conductivity is 7.128 Ωcm. The resistance is 28058Ω. A voltage of 5v is applied. What is the drift velocity of the electrons, given that n = 1.01x10^{3}?

Other constants:

μ_{n}= 1350 cm^{2}/Vsec

μ_{p}= 450 cm^{2}/Vsec

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My work:

So basically,

I have the formula J_{n,drift}= qn(μ_{n}E).

The question asks for drift velocity, does that mean I'm trying to find J_{n,drift}or just the mobility factor μ_{n}E? What exactly is J_{n,drift}? In either scenario, how do I find E field if I'm only given a voltage? It's not like I can integrate b/c Voltage is constant through the resistor.

I was also considering using I = nqv_{d}A. But I was getting some outrageous velocity with this.

Ideas?

Thank you.

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# Drift velocity in a resistor?

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