(a)
The drift speed of the electrons in GaAs.
(a)
Answer to Problem 12P
The drift speed of the electrons in GaAs is
Explanation of Solution
Write the equation for the drift speed.
Here,
Conclusion:
Substitute
Therefore, the drift speed of the electrons in GaAs is
(b)
The percent of the drift speed to the electron’s thermal speed at
(b)
Answer to Problem 12P
The percent of the drift speed to the electron’s thermal speed at
Explanation of Solution
Write the equation connecting the kinetic energy and the thermal energy of the electron.
Here,
Rewrite the above equation for
Write the equation for the percentage of the drift speed to the electron’s thermal speed.
Conclusion:
The value of
Substitute
Substitute
Therefore, the percent of the drift speed to the electron’s thermal speed at
(c)
The average time between electron collisions.
(c)
Answer to Problem 12P
The average time between electron collisions is
Explanation of Solution
Rewrite equation (I) for
Write the equation for the electron mobility.
Here,
Equate the above two equations and rewrite it for
Conclusion:
The value of
Substitute
Therefore, the average time between electron collisions is
(d)
The electronic mean path.
(d)
Answer to Problem 12P
The electronic mean path is
Explanation of Solution
Write the equation for the electronic mean path.
Here,
Conclusion:
Substitute
Therefore, the electronic mean path is
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Chapter 12 Solutions
Modern Physics
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- Modern PhysicsPhysicsISBN:9781111794378Author:Raymond A. Serway, Clement J. Moses, Curt A. MoyerPublisher:Cengage Learning