| ⇦ | 
| ⇨ |
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: - A current is flowing through resistance. A potential difference of 120 V
- For a thermocouple, the neutral temperature is 270⁰C when its cold junction is at 20⁰C.
- Two identical flutes produce fundamental notes of frequency 300 Hz at 27° C
- A vertical spring with force constant k is fixed on a table. A ball of mass
- A body travelling along a straight line traversed one-third of the total distance
Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A current is flowing through resistance. A potential difference of 120 V
- For a thermocouple, the neutral temperature is 270⁰C when its cold junction is at 20⁰C.
- Two identical flutes produce fundamental notes of frequency 300 Hz at 27° C
- A vertical spring with force constant k is fixed on a table. A ball of mass
- A body travelling along a straight line traversed one-third of the total distance
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