A) \[1\,\mu A\]
B) \[0.9\,\mu A\]
C) \[30\,\mu A\]
D) \[18\,\mu A\]
E) \[9\,\mu A\]
Correct Answer: D
Solution :
\[\beta =\frac{\alpha }{1-\alpha }=\frac{0.9}{1-0.9}=9\] \[\Rightarrow \] \[\frac{\Delta {{I}_{c}}}{\Delta {{I}_{b}}}=9\Rightarrow {{I}_{c}}=9\times 2\] \[\Rightarrow \] \[\Delta {{I}_{c}}=18\,\mu A\]
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