(B) The voltage gain $(A_v)$ is given by:$A_v = \frac{\Delta V_o}{\Delta V_i} = \frac{\Delta I_c \times R_L}{\Delta V_i} = \frac{4 \times 10^{-3} \tim

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(B) The voltage gain $(A_v)$ is given by:$A_v = \frac{\Delta V_o}{\Delta V_i} = \frac{\Delta I_c \times R_L}{\Delta V_i} = \frac{4 \times 10^{-3} \times 10 \times 10^3}{40 \times 10^{-3}} = 1000$The current gain $(A_i)$ is given by:$A_i = \frac{\Delta I_c}{\Delta I_b} = \frac{4 \times 10^{-3}}{20 \times 10^{-6}} = 200$The power gain $(P)$ is the product of voltage gain and current gain:$P = A_v \times A_i = 1000 \times 200 = 2 \times 10^5$

Class 12 Physics Semiconductor Electronics Junction Transistor

Easy

Consider an amplifier circuit wherein a transistor is used in common emitter mode. The change in collector current and base current respectively are $4 mA$ and $20 \mu A$ when a signal of $40 mV$ is added to the base-emitter voltage. If the load resistance is $10 k\Omega$, then the power gain in the circuit is:

TS EAMCET 2018 All TS EAMCET

A
$1 \times 10^4$
B
$2 \times 10^5$
C
$8 \times 10^5$
D
$1 \times 10^6$

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Physics Questions

Chapter

Semiconductor Electronics

Subtopic

Junction Transistor

Previous Year

TS EAMCET 2018 Paper All TS EAMCET years →

In the shown common emitter amplifier circuit,$\beta = 80$ and $V_{BE} = 0.7\,V$. The value of $R_C$ is:

Medium

View Solution

In the study of a transistor as an amplifier,the ratio of collector current to emitter current is $0.98$. Then,the ratio of collector current to base current will be:

MediumMHT CET 2019

View Solution

Input signal to a common emitter amplifier having a voltage gain of $1000$ is given by $v_i = (0.004 \, V) \sin(\omega t + \pi/2)$. The corresponding output signal is

Easy

View Solution

For a transistor,if the emitter current $I_E = 25 \, mA$ and the base current $I_B = 1 \, mA$,what is the ratio of the collector current $I_C$ to the emitter current $I_E$?

Medium

View Solution

What is the basic constitutional unit in the electronic circuit?

Easy

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

Similar Questions

In the shown common emitter amplifier circuit,$\beta = 80$ and $V_{BE} = 0.7\,V$. The value of $R_C$ is:

In the study of a transistor as an amplifier,the ratio of collector current to emitter current is $0.98$. Then,the ratio of collector current to base current will be:

Input signal to a common emitter amplifier having a voltage gain of $1000$ is given by $v_i = (0.004 \, V) \sin(\omega t + \pi/2)$. The corresponding output signal is

For a transistor,if the emitter current $I_E = 25 \, mA$ and the base current $I_B = 1 \, mA$,what is the ratio of the collector current $I_C$ to the emitter current $I_E$?

What is the basic constitutional unit in the electronic circuit?

Vedclass Test Series

Exam Paper Generator

Online Exam Module