NEET Solved Paper 2017 Question 8
Question: In a common emitter transistor amplifier the audio signal voltage across the collector is 3 V. The resistance of collector is $ 3,k\Omega . $ If current gain is 100 and the base resistance is $ 2,k\Omega , $ the voltage and power gain of the amplifier is
Options:
A) 20 and 2000
B) 200 and 1000
C) 15 and 200
D) 150 and 15000
Show Answer
Answer:
Correct Answer: D
Solution:
- Current gain $ (\beta )=100 $ Voltage gain $ (A _{V})=\beta \frac{R _{c}}{R _{b}} $ $ =100( \frac{3}{2} ) $ $ =150 $ Power gain $ =A _{v}\beta $ $ =150,(100) $ = 15000
