Electronics - Bipolar Junction Transistors (BJT) - Discussion

3. 

A transistor has a mca12_1001a1.gif of 250 and a base current, IB, of 20 mu.gif A. The collector current, IC, equals:

[A]. 500 mu.gif A
[B]. 5 mA
[C]. 50 mA
[D]. 5 A

Answer: Option B

Explanation:

No answer description available for this question.

Koudinya said: (Oct 19, 2010)  
Ic = Beta x Ib

Laxman said: (Dec 3, 2010)  
Ic=Beta*Ib

Ic=250*20/1000000

=5000/1000000
Ic=5mA

Rajnish Tiwari said: (Dec 11, 2010)  
Beta=Ic/Ib
Ic=Beta*Ib
Ic=250*20/1000000

Ic=5mA

Arghya Das said: (Jan 18, 2011)  
Beta is 250,Ib=20
collector current Ic=(Ib*beta)/10^6
Ic=5000/10^6
=5mA

Sashibhusan Panda said: (Sep 18, 2011)  
For dc operation of bjd

Ic=Ie+(beta)Ib

But for Ib=20ua current value, Ie negligible so considered as zero.

=> Ic=250*20uA=5mA. (ans)

Micheal said: (Oct 7, 2011)  
Bdc is 250 and current base Ib=20
so
they formula say that collector current(Ic)= Ib*Bdc
then IC= 20*250
=5000
sol: 5mA

Jyothi said: (Nov 10, 2011)  
Ic=BIb
=250*20*10^-6
5 mA

Shreshthagupta said: (Feb 27, 2012)  
Ic=Beta*Ib
=250*20*10^-6
=5*10^-6
=5mA

Bala.J said: (Apr 20, 2012)  
THE FORMULA USED TO FIND OUT THE IC IS Ic = Ib*GAIN
= (20*10^-6)*(250)
=5*10^3* 10^-6
= 5mA

Kalpana said: (Sep 29, 2012)  
In common emiter configuration, amplification factor is given by BETE=Ic/Ib.
Ic=BETA*Ib
=250*(20*10^-6)
=5000*10^-6
=5mA

Sid said: (Jan 1, 2013)  
From formula,

Ic(collector current) = Beta*Ib(base current).

=250*20*10^-6.

=5*10^-3.

=5mA.

Tejaswini said: (Aug 4, 2013)  
Ic = BIb.

Ic = 250*20*10^-6.

Ic = 5mA.

Dieudonne Kubwimana said: (Apr 18, 2017)  
Given datas:bette = 250,current base = 20micro ampere.
Then IC = bette*current base.
IC = 250 * 20 = 5000micro ampere.

Convetion of 5000MA into mA will be 5mA(Ans).

Max Malick Electronic said: (Feb 7, 2018)  
β = Ic/Ib.
Ic=betta * Ib.
Ic = 250 * 20micro Ampere.
Ic = 5mA.

Moin Ansari said: (Aug 25, 2018)  
As we know that the amplification factor in ce mode β=Ic/Ib.
and Ib is in micro range so 20*1000000,
250*20/1000000=5ma answer.

Deepen said: (Nov 12, 2018)  
You are right, Agree @Kalpana.

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