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Physics - Semiconductors Question with Solution | TestHub

PhysicsSemiconductorsTransistorMedium2 minPYQ_2023

PhysicsMediumsingle choice

A transistor with $α = 0.98$ is operated as an amplifier in a common base circuit with a load resistance of $5 k Ω$ . If the dynamic resistance of the emitter base junction is 70 , the voltage gain and power gain of the circuit will be:

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Answer:

Solution:

$α = 0.95; R_{L} = 5 k Ω R_{i} = 70Ω A_{V} = α \frac{R _{L}}{R _{i}} = 0.98 \times \frac{5 \times 1 0 ^{3}}{70} = 70$ Power gain $= α^{2} \cdot \frac{R _{L}}{R _{i}} = 0.98 \times 70 = 68.6$

Stream:VITEEESubject:PhysicsTopic:SemiconductorsSubtopic:Transistor

⏱ 2mℹ️ Source: PYQ_2023

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