Electronics - Bipolar Junction Transistors (BJT) - Discussion
Discussion Forum : Bipolar Junction Transistors (BJT) - General Questions (Q.No. 5)
5.
With the positive probe on an NPN base, an ohmmeter reading between the other transistor terminals should be:
Discussion:
23 comments Page 2 of 3.
Subhankar said:
1 decade ago
As the transistor becomes forward biased, it offers low resistance.
Kartik said:
1 decade ago
Because of forward bias it has low resistance.
Kalpana said:
1 decade ago
When NPN base is conected to P-terminal or P-probe, the transister will operate under forward bias. In forward bias the deplition layer decreases. Then more number of electrons & holes will move from one region to the other region. Hence the resistance becomes low.
Bilal said:
1 decade ago
But the question is that they ask that if p terminal of supply is connected with p terminal of npn transistor what should be the reading of ohm meter with other two terminals not only for emitter terminal.
Sathya,manu said:
1 decade ago
Electrons are attracted towards the +ve terminal of the battery. And as base is p-type, which is connected to +ve of battery.
Yadhunandana R K said:
1 decade ago
Here question is not correct if positive terminal is there on the base of npn transistor low resistance between base and emitter terminals, high resistance between collector and base.
Neha kalani said:
1 decade ago
No @yadhunanda it is rite ! low resistance between both emitter and base as well as base and collector since emitter and collector both will have the negative terminals of the probe ! and hence it will always make a forward bias circuit.
Yoyo said:
1 decade ago
It is required to obtain resistance b/w emitter and collector. How do you do that?
Dileep Krishna said:
1 decade ago
When the positive probe of ohmmeter is placed on the p-type base in the transistor, it makes the condition of forward bias and we know that in forward bias resistance is low. That is the reason for the low resistance.
(1)
Pk azad said:
1 decade ago
Due to forward wise both junction, it behave low resistance.
(1)
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