Question

What is the voltage gain in a common emitter amplifier, when input resistance is 3 $\Omega$ and load resistance is 24 $\Omega$ with $\beta =60$?

• A. $480$
• B. $2.4$
• C. $4.8$
• D. $8.4$

Answer 1

The correct option is A $480$

Given : $\beta =60$

Input resistance $R_1=3\Omega$

Output resistance $R_2=24\Omega$

Voltage gain $A_v=\beta \times \frac{R_2}{R_1}=60\times \frac{24}{3}=480$