Physics of Everyday Phenomena
9th Edition
ISBN: 9781259894008
Author: W. Thomas Griffith, Juliet Brosing Professor
Publisher: McGraw-Hill Education
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Question
Chapter 21, Problem 17CQ
To determine
Whether the addition of impurity atoms of arsenic increases the electrical resistance of the semiconductor silicon.
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Students have asked these similar questions
Electrons in silicon have a mobility of 1000 cm /V-sec. The electric field is applied to make the
electrons reach a velocity of 3 x 10' cm/sec. Assume that the mobility is constant and
independent of the electric field. What voltage is required to obtain this field in a 5 um thick
region? How much time do the electrons need to cross the 5 um thick region?
12. The resistivity of a semiconductor can be modified by adding different
amounts of impurities. A rod of semiconducting material of length L
and cross-sectional area A lies along the x-axis between x=0 and x=L.
The material obeys Ohm's law, and its resistivity varies along the rod
according to p(x) = PooExp(-x/L)The end of the rod at is at a
potential greater than the end at x=0 is at a potential Vo greater than
the end x=L. (a) Find the total resistance of the rod and the current in
the rod. (b) Find the electric-field magnitude in the rod as a function
of x. (c) Find the electric potential in the rod as a function of x. (d)
Graph the functionsp(x), E (x) and V(x), for values of x between x =
0 and x = L
The table given below shows the resistivity of three Material X, Y and Z?
Samples
X
Y
Z
Resistivity
3 X 10-9
11.1 X 0-6
18X10-17
a. Arrange the samples in increasing order of conductivityb. Which of these is best conductor?c. Which are these is best insulator?
Chapter 21 Solutions
Physics of Everyday Phenomena
Ch. 21 - Prob. 1CQCh. 21 - Prob. 2CQCh. 21 - Prob. 3CQCh. 21 - Prob. 4CQCh. 21 - Prob. 5CQCh. 21 - Prob. 6CQCh. 21 - Prob. 7CQCh. 21 - How do we know that the universe is expanding?...Ch. 21 - Prob. 9CQCh. 21 - Prob. 10CQ
Ch. 21 - Prob. 11CQCh. 21 - Prob. 12CQCh. 21 - Describe two astronomical discoveries that provide...Ch. 21 - Prob. 14CQCh. 21 - Prob. 15CQCh. 21 - Prob. 16CQCh. 21 - Prob. 17CQCh. 21 - Prob. 18CQCh. 21 - Prob. 19CQCh. 21 - Prob. 20CQCh. 21 - Prob. 21CQCh. 21 - Prob. 22CQCh. 21 - Prob. 23CQCh. 21 - Prob. 24CQCh. 21 - Prob. 25CQCh. 21 - Prob. 26CQCh. 21 - Prob. 27CQCh. 21 - Prob. 28CQCh. 21 - The average distance from the sun to Venus is...Ch. 21 - Prob. 2ECh. 21 - The nearest star to our sun is a red dwarf named...
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