Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Semiconductors and Electronic Devices

Question:

When the emitter current in a transistor is changed by 1 mA, then its collector current changes by 0.99 mA. The value of its common base current gain will be:

Options:

1.99

9.99

0.999

0.99

Correct Answer:

0.99

Explanation:

$α=\frac{ΔI_C}{ΔI_E}=\frac{0.99}{1}=0.99$