⇦ | ⇨ |
A transistor is operated in common-emitter configuration at Vᵥ = 2 V such that a change in the base current from 100 µA to 200 µA produces a change in the collector current from 5 mA to 10 mA. The current gain is
Options
(a) 100
(b) 150
(c) 50
(d) 75
Correct Answer:
50
Explanation:
∆Iₑ = ∆Iₘ + ∆Iₙ
β = ∆Iₙ / ∆Iₘ
∆Iₙ = (10 – 5)10⁻³ = 5 x 10⁻³ A
∆Iₘ = (200 – 100)10⁻⁶ = 100 x 10⁻⁶ A
β = 5 x 10⁻³ / 100 x 10⁻⁶ = 5/100 x 1000 = 50
Related Questions: - Penetrating power of X-rays does not depend on
- In an inductor when current changes from 2 A to 18 A in 0.05 sec, the e.m.f. induced
- A coil of 40 henry inductance is connected in series with a resistance of 8 ohm
- A transverse wave is represented by y = a sin (?t – kx)
- When volume of a system is increased two times and temperature is decreased
Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Penetrating power of X-rays does not depend on
- In an inductor when current changes from 2 A to 18 A in 0.05 sec, the e.m.f. induced
- A coil of 40 henry inductance is connected in series with a resistance of 8 ohm
- A transverse wave is represented by y = a sin (?t – kx)
- When volume of a system is increased two times and temperature is decreased
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