Electronic Devices Question 297
Question: In a common emitter transistor, the current gain is 80. What is the change in collector current, when the change in base current is 250 mA
[CBSE PMT 2000]
Options:
A) 80 x 250 mA
B) (250 - 80) mA
C) (250 + 80) mA
D) 250/80 mA
Show Answer
Answer:
Correct Answer: A
Solution:
Current gain $ \beta =\frac{\Delta i _{c}}{\Delta i _{b}} $
$ \Rightarrow \Delta i _{c}=\beta \times \Delta i _{b} $ = 80 x 250 mA.
