Physics - Semiconductors Question with Solution | TestHub

PhysicsSemiconductorsTransistorEasy2 minPYQ_2020

PhysicsEasynumerical

Power gain for common base amplifier is $400$ and voltage gain is $420$ . Find the collector current (in $mA$ ) when base current is $100 μA$ .

Answer:

2.00

Solution:

$A_{p} = α A_{v}$
$\Rightarrow 400 = α \times 420$
$\Rightarrow α = \frac{40}{42} = \frac{20}{21}$
$\Rightarrow β = 20$
And, $l_{c} = β \times l_{b} = 2 mA$

Subject:PhysicsTopic:SemiconductorsSubtopic:Transistor

⏱ 2mℹ️ Source: PYQ_2020

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