A transistor is operated in common-emitter configuration at Vᵥ = 2 V such that a change

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

admin:

Related Questions

  1. The velocity of sound is V, in air. If the density of air is increased to four times
  2. A particle doing SHM has amplitude=4 cm and time period = 12 sec. The ratio between times
  3. A particle has initial velocity(3i⃗ +4j⃗)and has acceleration (0.4i⃗ +0.3j⃗)
  4. A bar magnet of magnetic moment M is placed at right angles to a magnetic
  5. Transformer is used to