NEET 2017
- Exam
- NEET
- Year
- 2017
- Subject
- Physics
- Chapter
- Semiconductors
NEET 2017 · Physics · Semiconductors
In a common-emitter transistor amplifier, the audio signal voltage...
In a common-emitter transistor amplifier, the audio signal voltage across the collector is The resistance of collector is . If current gain is and the base resistance is , the voltage and power gain of the amplifier is
Options
- A and
- B and
- C and
- D and
Correct answer
C. and
Step-by-step solution
Current gain
Voltage gain \left({A}_{V}\right) = \beta\dfrac{{R}_{c}}{{R}_{b}} = 100\left(\dfrac{3}{2}\right) = 150= {A}_{V}\beta = 150\left(100\right) = 15000
Voltage gain \left({A}_{V}\right) = \beta\dfrac{{R}_{c}}{{R}_{b}} = 100\left(\dfrac{3}{2}\right) = 150= {A}_{V}\beta = 150\left(100\right) = 15000