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Physics - Semiconductors Question with Solution | TestHub

PhysicsSemiconductorsTransistorEasy2 minPYQ_2020

PhysicsEasysingle choice

A transistor is used as an amplifier in $C B$ mode with a load resistance of $5 k Ω$ . The current gain of amplifier is $0.98$ and the input resistance is $70 Ω$ . The voltage gain and power gain, respectively, are

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Answer:

Solution:

$α = \frac{I_{C}}{I_{E}} = 0.98$

$V_{α} = α \frac{R_{L}}{R_{i n}} = 0.98 \times \frac{5 \times 1 0^{3}}{70}$

$P_{α} = α^{2} \frac{R_{L}}{R_{i n}} = {(0.98)}^{2} \times \frac{5 \times 1 0^{3}}{70}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:SemiconductorsSubtopic:Transistor

⏱ 2mℹ️ Source: PYQ_2020

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