Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 76
78. For a common emitter circuit if $\frac{I_C}{I_E}=0.98$ then current gain for common emitter circuit will be
(a) 49
(b) 98
(c) 4.9
(d) 25.5
[2001]
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Answer:
Correct Answer: 78. (a)
Solution:
- (a) We have,
$ \beta=\frac{\alpha}{1-\alpha}=\frac{0.98}{1-0.98}=\frac{0.98}{0.02}=49 $
