2 m m² He = 0.36 , HHy = 0.17. v.sec. %3D calculate: v. sec . 1) The drift velocity of the electron and the hole. 2) The conductivity of the germanium if the intrinsic carriers concentration equals (2.5x10" / m² ). 3) The total current. w= 0.4 cm d=0.15cm L= 2.5 cm 111

2 m m² He = 0.36 , HHy = 0.17. v.sec. %3D calculate: v. sec . 1) The drift velocity of the electron and the hole. 2) The conductivity of the germanium if the intrinsic carriers concentration equals (2.5x10" / m² ). 3) The total current. w= 0.4 cm d=0.15cm L= 2.5 cm 111

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter29: Solid-state Electronics

Section29.1: Conduction In Solids

Problem 8PP

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Concept explainers

The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways:

Question

Q6
For the pure (intrinsic) germanium in the following figure
2
m
M. = 0.36
m2
calculate:
V. sec .
> Hy = 0.17.
v.sec.
1) The drift velocity of the electron and the hole. 2) The conductivity of
the germanium if the intrinsic carriers concentration equals ( 2.5x10" / m² ).
3) The total current.
w= 0.4 cm
d=0.15cm
L= 2.5 cm
10 v
Ans.) 144–
,68-
,2.12(Qm)",0.005A
sec.
sec.

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