| ⇦ | 
| ⇨ |
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 certain number of spherical dropes of a liquid of radius r coalesce to form a single
- Consider two concentric spherical metal shells of radii r₁ and r₂( r₂>r₁). If the outer
- A glass slab consists of thin uniform layers of progressively decreasing refractive
- A filament bulb (500W,100V) is to be used in a 230V main supply. When a resistance
- A galvanometer has a coil of resistance 100 ohm and gives a full-scale deflection
Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A certain number of spherical dropes of a liquid of radius r coalesce to form a single
- Consider two concentric spherical metal shells of radii r₁ and r₂( r₂>r₁). If the outer
- A glass slab consists of thin uniform layers of progressively decreasing refractive
- A filament bulb (500W,100V) is to be used in a 230V main supply. When a resistance
- A galvanometer has a coil of resistance 100 ohm and gives a full-scale deflection
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