In an NPN transistor the collector current is 24 mA. If 80% of electrons reach collector its base current in mA is

1. 36                       2. 26
3. 16                       4. 6

Concept Questions :-

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


If α = 0.98 and current through emitter ie = 20 mA, the value of β is 
(a) 4.9                  (b) 49
(c) 96                   (d) 9.6

Concept Questions :-

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


In a PNP transistor working as a common-base amplifier, current gain is 0.96 and emitter current is 7.2 mA. The base current is 

(a) 0.4 mA                    (b) 0.2 mA
(c) 0.29 mA                   (d) 0.35 mA

Concept Questions :-

Applications of Transistor
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


 If l1l2l3 are the lengths of the emitter, base and collector of a transistor then 
(a)l1l2 = l3                   (b) l3 <l2l1
(c) l3l1 < l2                 (d) l3l1>l2

Concept Questions :-

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


In an NPN transistor circuit, the collector current is 10 mA. If 90% of the electrons emitted reach the collector, the emitter current (iE) and base current (iB) are given by 
(a) iE = –1 mA, iB = 9 mA
(b) iE = 9 mA, iB = – 1 mA
(c) iE = 1 mA, iB = 11 mA
(d) iE = 11 mA, iB = 1 mA

Concept Questions :-

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


In a common emitter transistor, the current gain is 80. What is the change in collector current, when the change in base current is 250 μ
(a) 80 × 250 μA

(b) (250 – 80) μA

(c) (250 + 80) μA

(d) 250/80 μA

Concept Questions :-

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Least doped region in a transistor 

(a) Either emitter or collector

(b) Base

(c) Emitter

(d) Collector

Concept Questions :-

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The transistors provide good power amplification when they are used in 

(a) Common collector configuration

(b) Common emitter configuration

(c) Common base configuration

(d) None of these

Concept Questions :-

Applications of Transistor
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The transfer ratio of a transistor is 50. The input resistance of the transistor when used in the common-emitter configuration is 1 KΩ. The peak value for an A.C input voltage of 0.01 V peak is 
(a) 100 μA                        (b) 0.01 mA
(c) 0.25 mA                       (d) 500 μA

Concept Questions :-

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


For a transistor the parameter β = 99. The value of the parameter α is

(a) 0.9                 (b) 0.99
(c) 1                    (d) 9

Concept Questions :-

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level: