Physics - Semiconductors Question with Solution | TestHub

PhysicsSemiconductorsTransistorEasy2 minPYQ_2020

PhysicsEasysingle choice

A transistor is used as an amplifier in common base mode with a load resistance of $5 kΩ$ . The current gain of the amplifier is $0.98$ and the input resistance is $70 kΩ$ , the voltage gain is

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Answer:

Solution:

Here, in common base mode $α = 0.98,$

$R =$ 5 k $Ω = {5 \times 10}^{3}$

$R_{i n} = 70 Ω$

Voltage gain

$A_{V} = α \times \frac{R}{R_{i n}} = 0.98 \times \frac{{5 \times 10}^{3}}{70} = 70$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:SemiconductorsSubtopic:Transistor

⏱ 2mℹ️ Source: PYQ_2020

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