A) 49
B) 98
C) 4.9
D) 24.5
Correct Answer: A
Solution :
Key Idea: \[\frac{\Delta {{i}_{C}}}{\Delta {{i}_{E}}}\,\] is the current gain \[(\alpha )\] in common-base configuration. |
\[\alpha =\frac{\Delta {{i}_{C}}}{\Delta {{i}_{E}}}\,=\,0.98\] |
The current gain in common-emitter configuration |
\[\beta =\frac{\alpha }{1-\alpha }=\frac{0.98}{1-0.98}\] |
\[=\frac{0.98}{0.02}=49\] |
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