The current gain of a common emitter amplifie | vedclass

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

Question

(B) Given,current gain of $CE$ amplifier $\beta = 69$ and emitter current $I_{E} = 7.0\,mA$.We know the relation between collector current $I_{C}$ and

Vedclass · Accepted Answer

$6.9$

Vedclass · Answer

(B) Given,current gain of $CE$ amplifier $\beta = 69$ and emitter current $I_{E} = 7.0\,mA$.We know the relation between collector current $I_{C}$ and emitter current $I_{E}$ is given by $I_{C} = \alpha I_{E}$,where $\alpha$ is the current gain in common base configuration.The relationship between $\alpha$ and $\beta$ is $\alpha = \frac{\beta}{1 + \beta}$.Substituting the value of $\beta = 69$,we get $\alpha = \frac{69}{1 + 69} = \frac{69}{70}$.Now,calculating the collector current: $I_{C} = \left( \frac{69}{70} ight) 	imes 7.0\,mA$.$I_{C} = 69 	imes 0.1 = 6.9\,mA$.

The current gain of a common emitter amplifier is $69$. If the emitter current is $7.0\,mA$,the collector current is.....$mA$.

Similar Questions

For a transistor,the parameter $\beta = 99$. The value of the parameter $\alpha$ is

In a transistor configuration,the $\beta$-parameter is defined as:

In an $NPN$ transistor circuit,the collector current is $10 \ mA$. If $95\%$ of the electrons emitted reach the collector,what is the base current in $mA$?

In the given common-emitter circuit, an $npn$ transistor with $\beta = 100$ is connected. What is the output voltage of the amplifier?

In the $CB$ mode of a transistor, when the collector voltage changes by $0.5 \ V$, the collector current changes by $0.05 \ mA$. What is the output resistance in $k\Omega$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module