Semiconducting Devices Question 109
Question: In a transistor, a change of 8.0 mA in the emitter current produces a change of 7.8 mA in the collector current. What change in the base current is necessary to produce the same change in the collector current
Options:
A) 50 mA
B) 100 mA
C) 150 mA
D) 200 mA
Show Answer
Answer:
Correct Answer: D
Solution:
$ \Delta i _{e}=\Delta i _{c}+\Delta i _{b} $
Therefore 8 = 7.8 + $ \Delta i _{b} $
$ \Rightarrow \Delta i _{b} $ =0.2mA = 200 mA.
