2 which of the following statements is true in

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Unformatted text preview: two equations; (i) ∑ S ( p′, p ) f ( p′ ) − ∑ S ( p, p′ ) f ( p ) = 0 p′ p′ S ( p′, p ) f ( p′ ) − S ( p, p′ ) f ( p ) = 0 (ii) What are these equations statement of ? a) detailed balance b) steady- state conditions. c) (i) detailed balance and (ii) steady- state conditions. d) (i) steady- state conditions and (ii) detailed balance. e) none of the above (This is a poor question. (ii) is detailed balance, but (1) is not steady- state.) (continued on next page) 3 Lecture 28 Quiz: 1) Mathematically, what is the solution to the equilibrium BTE? a) The Fermi- function. b) The Fermi function or the Bose- Einstein distribution. c) Any function of kinetic energy. d) Any function of total energy. e) Any function of total momentum. (The LHS is satisfied by any function of total energy, but the RHS needs a Fermi function to satisfy detailed balance.) 2) Which of the following statements is true in equilibrium? a) The electrostatic potential is constant with position. b) The chemical potential is constant with position. c) The carrier density potential is constant with position. d) The electroc...
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This document was uploaded on 01/15/2014.

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