Electronic Devices Question 9
Question: In a common base amplifier circuit, calculate the change in base current if that in the emitter current is 2 mA and a = 0.98
[BHU 1995]
Options:
A) 0.04 mA
B) 1.96 mA
C) 0.98 mA
D) 2 mA
Show Answer
Answer:
Correct Answer: A
Solution:
$ \Delta i _{c}=\alpha \Delta i _{e}=0.98\times 2=1.96mA $
$ \Delta i _{b}=\Delta i _{e}-\Delta i _{c}=2-1.96=0.04mA $ .
