Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Semiconductors and Electronic Devices

Question:

A transistor having $α$ = 0.99, is used in a common-base amplifier. If the load resistance is 4.5 KΩ and the dynamic resistance of the emitter junction is 50 KΩ, the voltage gain of the amplifier will be:

Options:

79.1

89.1

99.1

None of these

Correct Answer:

89.1

Explanation:

$\frac{αR_L}{R_e}=\frac{0.99×4500}{50}=89.1$