Semiconducting Devices Question 106

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 $ .



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