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AIEEE 2006 Solved Paper
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© examsnet.com
Question : 98
Total: 143
If the ratio of the concentration of electrons to that of holes in a semiconductor is
7
5
and the ratio of currents is
7
4
, then what is the ratio of their drift velocities?
5
8
4
5
5
4
4
7
Validate
Solution:
I
e
I
h
=
n
e
e
A
v
e
n
h
e
A
v
h
⇒
7
4
=
7
5
×
v
e
v
h
⇒
v
e
v
h
=
5
4
© examsnet.com
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