In an experiment,the input characteristics ar | vedclass

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

Question

(A) In the input characteristics of a common-emitter $(CE)$ transistor,the base current $I_B$ is plotted against the base-emitter voltage $V_{BE}$ for

Vedclass · Accepted Answer

$V_{CE_1} > V_{CE_2}$

Vedclass · Answer

(A) In the input characteristics of a common-emitter $(CE)$ transistor,the base current $I_B$ is plotted against the base-emitter voltage $V_{BE}$ for a constant collector-emitter voltage $V_{CE}$.As the collector-emitter voltage $V_{CE}$ increases,the depletion region width at the collector-base junction increases,which reduces the effective base width. This leads to a decrease in the recombination of charge carriers in the base region,causing the base current $I_B$ to decrease for a fixed $V_{BE}$.Therefore,for a given $V_{BE}$,a higher $V_{CE}$ results in a lower $I_B$.Looking at the graph,the curve for $V_{CE_2}$ is shifted to the left (higher $I_B$ for the same $V_{BE}$) compared to the curve for $V_{CE_1}$.This implies that $V_{CE_2}$ must be smaller than $V_{CE_1}$,i.e.,$V_{CE_2}  V_{CE_2}$.

In an experiment,the input characteristics are shown for a $CE$ configuration $n-p-n$ transistor for different output voltages. Based on the graph,which of the following is correct?

Similar Questions

$A$ common emitter amplifier has a voltage gain of $50$, an input resistance of $100 \ \Omega$, and an output resistance of $200 \ \Omega$. What is the power gain of the amplifier?

The output characteristics of a transistor in common emitter $(CE)$ mode is the graph obtained by plotting

In a properly biased transistor:

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 $I_E$?

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 $mA$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module