773_Physics ProblemsTechnical Physics

773_Physics ProblemsTechnical Physics - Chapter 27 P27.26...

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Chapter 27 113 P27.26 (a) n is unaffected (b) J I A I =∝ so it doubles . (c) Jn e v d = so v d doubles . (d) τ σ = m nq 2 is unchanged as long as does not change due to a temperature change in the conductor. P27.27 From Equation 27.17, ρ == × ×× × × × = × = −− m nq v e 2 31 19 2 8 14 51 4 8 911 10 1 60 10 1 70 10 247 10 8 60 10 2 47 10 2 12 10 21 2 . .. . ... . 8.49 10 s ms s m nm 28 ej e j e j A Section 27.4 Resistance and Temperature P27.28 At the low temperature T C we write R V I RT T C C C + 00 1 α bg where T 0 20 0 .C . At the high temperature T h , R V I V T h h h === + ∆∆ 1 1 A . Then V VI C af a f
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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