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Homework_MSE2001H_ch10

# Homework_MSE2001H_ch10 - MSE 2001 H Homework Chapter 10...

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1 MSE 2001 H Homework Chapter 10 April 22 , 2008 Seung Soon Jang 1. Please put the three factors affecting the electrical conductivity. 2. Please put the definition of charge carrier mobility using drift velocity and electric field. 3. Please explain the effect of temperature on the charge mobility. 4. Estimate the drift velocity of an electron through the Al wire [R=0.0283 Ω , L= 1 m and μ =1.22X10 -3 m 2 /(V-s)]. The current flowing through the wire is 3 A. 5. Please explain the difference between energy level and energy band.

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2 6. In order to have metallic free electrons, we need to have the _______________ between energy bands in solid state. 7. The resistance of an aluminum wire (L= 1 m and A = 1 mm 2 ) is 0.0283 Ω . Calculate the number of mobile electrons contributed by each Al atom. Assume the current is carried exclusively by electrons which have a mobility of 1.22X10 -3 m 2 /(V-s). q
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Homework_MSE2001H_ch10 - MSE 2001 H Homework Chapter 10...

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