| ⇦ | 
| ⇨ |
A common emitter amplifier has a voltage gain of 50, an input impedance of 100Ω and an output impedance of 200Ω. The power gain of the amplifier is
Options
(a) 500
(b) 1000
(c) 1250
(d) 50
Correct Answer:
1250
Explanation:
Power gain = voltage gain x current gain
= Vₕ . Iₕ = V₀ / Vᵢ . I₀ / Iᵢ
= V₀² / Vᵢ² . Rᵢ / R₀ = 50 x 50 x 100/200
= 2500 / 2 = 1250
Related Questions: - Which of the following statement about scalar quantity is true?
- Angle of contact of a liquid with a solid depends on
- The electric field at a distance 3R / 2 from the centre of a charged conducting
- For having large magnification power of a compound microscope
- A cylindrical capacitors has charge Q and length L. If both the charge and length
Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following statement about scalar quantity is true?
- Angle of contact of a liquid with a solid depends on
- The electric field at a distance 3R / 2 from the centre of a charged conducting
- For having large magnification power of a compound microscope
- A cylindrical capacitors has charge Q and length L. If both the charge and length
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply