First slide

Transistor

Question

What is the voltage gain in a common emitter amplifier, where input resistance is 3 $Ω$ and load resistance 24 $Ω$ ? (Tale $β$ = 0.6

Easy

A

8.4
B

4.8
C

2.4
D

1.2

Solution

Given that $R_{L} = 24 Ω and R_{i} = 3 Ω$
resistance gain $= \frac{R_{L}}{R_{i}} = \frac{24}{3} = 8$
\r6lrege gain = Current gain x Resistance gain
= 0.6x7= 4.8

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