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Class 12 NEET Physics Semiconductor Electronics Part 1
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© examsnet.com
Question : 31
Total: 100
A transistor is operated in common-emitter configuration at
V
C
=
2
V
such that a change in the base current from
100
µ
A
to
200
µ
A
produces a change in the collector current from5 mA to 10 mA. The current gain is
(2009)
100
150
50
75
Validate
Solution:
For common emitter, the current gain is
β
=
(
Δ
I
C
Δ
I
B
)
V
C
E
β
=
(
10
×
10
−
3
−
5
×
10
−
3
)
A
(
200
×
10
−
6
−
100
×
10
−
6
)
A
=
5
×
10
−
3
100
×
10
−
6
=
50
© examsnet.com
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