. In this amplifier, find the voltage gain of the amplifier
A. 200
B. 400
C. 100
D. 500
Best Answer
Ans: A
Sol: From VE and RE ,
IE = VE /RE
IE = 2V/2kΩ = 1mA
IC ≈ IE
IC = 1mA
Therefore,
Vout = Vcc - IC RC
Vout = 15 – 1mA * 5kΩ = 10V
Voltage gain = Vout/Vin =10 / 50mV =200
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