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NEET 2002
Exam
NEET
Year
2002
Subject
Physics
Chapter
Semiconductors

NEET 2002 · Physics · Semiconductors

For a transistor (I_C)/(I_E)=0.96 , then the current gain for...

For a transistor ICIE=0.96\frac{I_C}{I_E}=0.96, then the current gain for common emitter configuration:

Options

  1. A12
  2. B6
  3. C48
  4. D24

Correct answer

D. 24

Step-by-step solution

For the common emitter configuration, the current transfer ratio is α=ICIB=0.96∴ Current gain =β=α1−α=0.961−0.96=24\begin{aligned} & \alpha=\frac{I_C}{I_B}=0.96 \\ & \therefore \text{ Current gain }=\beta=\frac{\alpha}{1-\alpha} \\ & =\frac{0.96}{1-0.96}=24 \end{aligned}
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