Electronics - Bipolar Junction Transistors (BJT) - Discussion


A current ratio of IC/IE is usually less than one and is called:

[A]. beta
[B]. theta
[C]. alpha
[D]. omega

Answer: Option C


No answer description available for this question.

Girish said: (Jan 8, 2011)  
Because it is the ratio of collector current to the emitter current and it is true collector current is less than emitted and is called alpha or current gain.

Amit said: (Jul 26, 2011)  
hence (Ic/Ie )<1

Nisha said: (Apr 16, 2012)  
B/C here the ratio shows common base configuration so the ratio is denote by alpha.

Kalpana said: (Sep 29, 2012)  
In common base configuration the amplification factor is represented by 'Alpha'.
alpha=output current/input current

Priyankha said: (Aug 17, 2013)  
Can anyone explain me the common base, common collector, and common emitter configuration please?

Ketan Raje said: (Jul 24, 2014)  
In common base configuration the amplification factor is represented by 'Alpha'.

Alpha = output current/input current.
Alpha = Ic/Ie.

Ravi said: (Jan 7, 2015)  
Common base means base as ground, emitter as input, collector as output any voltage or current amplification is output quantity/input quantity.

J Ramya said: (Nov 24, 2015)  
Since the total emitter current does nt reach collector because of recombination's in base. So collector current is less than emitter hence the ratio is less than 1.

Dicy Devasia said: (Sep 24, 2019)  
β = Ic/Ib.
α = Ic/Ie.
γ =Ie/Ib.

Ic = Collector current,
Ib = Base current,
Ie = Emitter current.

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