Physics for Scientists and Engineers, Vol. 1
6th Edition
ISBN: 9781429201322
Author: Paul A. Tipler, Gene Mosca
Publisher: Macmillan Higher Education
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Question
Chapter 38, Problem 4P
(a)
To determine
The name of two metals from Table 38-2.
(b)
To determine
The value of contact potential.
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Students have asked these similar questions
(a) For indium phosphide (InP) at room
temperature, calculate the electron and
hole mobilities for the following cases :
For intrinsic InP, the electrical
conductivity, the number of electrons
per cubic meter and the number
of holes
per cubic meter
are
2.5 x 10-6 (22m)¹, 3× 10¹3 m -3
and
3 x 1013 m3, respectively. Similarly, for
n-type extrinsic InP, the electrical
conductivity, the number of electrons
per cubic meter and the number of
cubic meter
holes
per
3-6x 10-6 (2m), 4.5 × 10¹3-3
2 x 10¹3 m³, respectively.
are
and
(a) Show that the resistivity of intrinsic germanium at 300 °K is 0.45 2.m if
n₁ = 2.5×10¹⁹ m²³, n = 0.38 m²/V.s, p = 0.18 m²/v.s.
-3
(b) If a donor-type impurity added to the extent of 1 atom per 108 germanium atoms, prove
that the resistivity drops to 0.037 2.m. Density = 5.32x10³ Kg/m³, atomic weight
72.6.
(a) Show that the skin depth in a poor conductor (o « we) is (2/0)JE/µ (independent of
frequency). Find the skin depth (in meters) for (pure) water.
(b) Show that the skin depth in a good conductor (ơ » we) is à /27 (where à is the wavelength
in the conductor). Find the skin depth (in nanometers) for a typical metal (a 107 (2 m)-')
in the visible range (» z 1015/s), assuming e = €o and µ z µo. Why are metals opaque?
Chapter 38 Solutions
Physics for Scientists and Engineers, Vol. 1
Ch. 38 - Prob. 1PCh. 38 - Prob. 2PCh. 38 - Prob. 3PCh. 38 - Prob. 4PCh. 38 - Prob. 5PCh. 38 - Prob. 6PCh. 38 - Prob. 7PCh. 38 - Prob. 8PCh. 38 - Prob. 9PCh. 38 - Prob. 10P
Ch. 38 - Prob. 11PCh. 38 - Prob. 12PCh. 38 - Prob. 13PCh. 38 - Prob. 14PCh. 38 - Prob. 15PCh. 38 - Prob. 16PCh. 38 - Prob. 17PCh. 38 - Prob. 18PCh. 38 - Prob. 19PCh. 38 - Prob. 20PCh. 38 - Prob. 21PCh. 38 - Prob. 22PCh. 38 - Prob. 23PCh. 38 - Prob. 24PCh. 38 - Prob. 25PCh. 38 - Prob. 26PCh. 38 - Prob. 27PCh. 38 - Prob. 28PCh. 38 - Prob. 29PCh. 38 - Prob. 30PCh. 38 - Prob. 31PCh. 38 - Prob. 32PCh. 38 - Prob. 33PCh. 38 - Prob. 34PCh. 38 - Prob. 35PCh. 38 - Prob. 36PCh. 38 - Prob. 37PCh. 38 - Prob. 38PCh. 38 - Prob. 39PCh. 38 - Prob. 40PCh. 38 - Prob. 41PCh. 38 - Prob. 42PCh. 38 - Prob. 43PCh. 38 - Prob. 44PCh. 38 - Prob. 45PCh. 38 - Prob. 46PCh. 38 - Prob. 47PCh. 38 - Prob. 48PCh. 38 - Prob. 49PCh. 38 - Prob. 50PCh. 38 - Prob. 51PCh. 38 - Prob. 52PCh. 38 - Prob. 53PCh. 38 - Prob. 54PCh. 38 - Prob. 55PCh. 38 - Prob. 56PCh. 38 - Prob. 57PCh. 38 - Prob. 58PCh. 38 - Prob. 59PCh. 38 - Prob. 60PCh. 38 - Prob. 61PCh. 38 - Prob. 62PCh. 38 - Prob. 63PCh. 38 - Prob. 64PCh. 38 - Prob. 65PCh. 38 - Prob. 66PCh. 38 - Prob. 67PCh. 38 - Prob. 68PCh. 38 - Prob. 69PCh. 38 - Prob. 70PCh. 38 - Prob. 71PCh. 38 - Prob. 72PCh. 38 - Prob. 73PCh. 38 - Prob. 74PCh. 38 - Prob. 75PCh. 38 - Prob. 76P
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