Physics - Semiconductors Question with Solution | TestHub

PhysicsSemiconductorsTransistorEasy2 minPYQ_2020

PhysicsEasysingle choice

In a n-p-n transistor, the collector current is $10 mA$ . If $90 %$ of the electrons emitted reach the collector, then the emitter current will be

Options:

Answer:

Solution:

In an n-p-n transistor emitter current ( $i_{e}$ ) is the sum of base current ( $i_{b}$ ) and collector current ( $i_{c}$ ).

Given, $\frac{90}{100} i_{e} = i_{c}$ ...(i)

Also, $i_{c} = 10$ mA ...(ii)

From Eqs. (i) and (ii), we get

$i_{e} = \frac{10 \times 100}{90} = 11 mA$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:SemiconductorsSubtopic:Transistor

⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...