Physics - Semiconductors Question with Solution | TestHub

PhysicsSemiconductorsTransistorEasy2 minPYQ_2020

PhysicsEasysingle choice

In a transistor, the collector current varies by $0.49 m A$ and emitter current varies by $0.50 A$ . Current gain $β$ measured is

Options:

Answer:

Solution:

Given,

${ΔI}_{C} = 0 .49 m A = 0 .49 \times 10^{- 3} A$

${ΔI}_{E} = 0 .50 m A = 0 .50 \times 10^{3} A$

$α = \frac{{ΔI}_{C}}{{ΔI}_{E}}$

$β = \frac{α}{1 - α} = \frac{\frac{0 .49}{0 .50}}{1 - \frac{0 .49}{0 .50}}$

$= \frac{49}{50 (1 - \frac{49}{50})}$

$= \frac{49 \times 50}{50 (50 - 49)}$

$β = 49$

Subject:PhysicsTopic:SemiconductorsSubtopic:Transistor

⏱ 2mℹ️ Source: PYQ_2020

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