My Notes

Create your notes while watching video by clicking on icon in video player.
Related Practice Questions :

In a common emitter transistor amplifier, the audio signal voltage across resistance of 1 kΩ is 2V. If the base resistance is 200Ω and the current amplification factor is 50, the input signal voltage will be

(1) 4 mV

(2) 8 mV

(3) 16 mV

(4) 32 mV

 

 68%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

If α be the current gain of a transistor in common base mode and β be the current gain in
common emitter mode then-

1.  α < 1 

2.  β > 1 

3.  α = β1 + β

4.  All of these

 

 73%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

The input resistance of a silicon transistor is

100 Ω. Base current is changed by 40 μA

which results in a change in collector current

by 2 mA. This transistor is used as a common-

emitter amplifier with a load resistance of 4 kΩ.

The voltage gain of the amplifier is

1. 2000

2. 3000

3. 4000

4. 1000

 80%
From NCERT
NEET - 2012
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The device that can act as a complete electronic circuit is

1. Junction diode

2. Integrated circuit

3. Junction transistor

4. Zener diode

From NCERT
NEET - 2010
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

For transistor action:

(a) the base, emitter and collector regions should have similar size and doping concentrations.
(b) the base regions must be very thin and lightly doped.
(c) the emitter-base junction is forward biased and the base-collector junction is reverse biased.
(d) both the emitter-base junction as well as the base-collector junction are forward biased.

Which of the following pairs of statements is correct?
1. (d) and (a)
2. (a) and (b)
3. (b) and (c)                                       
4. (c) and (d)

 86%
From NCERT
NEET - 2010
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch