Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Semiconductors and Electronic Devices

Question:

The DC current gain of a transistor in common base configuration is 0.98. Its current gain in common emitter configuration will be:

Options:

99

69

49

39

Correct Answer:

49

Explanation:

$β=\frac{α}{1-α}=\frac{0.98}{1-0.98}=\frac{0.98}{0.02}=49$