A) 0.2mA
B) 0.1mA
C) 0.002 mA
D) none of these
Correct Answer: B
Solution :
Key Idea: Current amplification factor or current gain is just the ratio of collector current to emitter current. In a common-base configuration of a transistor circuit \[\text{Current}\,\text{gain,}\,\alpha =\frac{\text{collecter}\,\text{current}}{\text{emitter}\,\text{current}}=\frac{{{i}_{C}}}{{{i}_{g}}}\] \[\Rightarrow \] \[{{i}_{c}}=0.95\times 2\times {{10}^{-3}}A=1.9\,mA\] Also emitter current is sum of base current and collector current Also, \[{{i}_{B}}={{I}_{E}}-{{i}_{C}}=2-1.9=1.9\,mA\] Note: Base current is very less than emitter current.
You need to login to perform this action.
You will be redirected in
3 sec
