Question

In a transistor output characteristics commonly used in common emitter configuration, the base current $I_B$, the collector current $I_C$ and the collector-emitter voltage $V_{CE}$ have values of the following orders of magnitude in the active region:

• A. $I_B$ and $I_C$ both are in $\mu A$ and $V_{CE}$ in volt
• B. $I_B$ is in $\mu A$ and $I_C$ is in $mA$ and $V_{CE}$ in volt
• C. $I_B$ is in $mA$ and $I_C$ is in $\mu A$ and $V_{CE}$ in $mV$
• D. $I_B$ is in $mA$ and $I_C$ is in $mA$ and $V_{CE}$ in $mV$

Answer 1

The correct option is B $I_B$ is in $\mu A$ and $I_C$ is in $mA$ and $V_{CE}$ in volt

The above graph shows the output characteristics of the common emmiter transistor.

According to the graph shown, for a transistor to work in active region i.e the Q point lies in the active region if $I_B$ is in $\mu A$, $I_C$ is in $mA$ and $V_{CE}$ is in volt.