Physics - Semiconductors Question with Solution | TestHub

In a common emitter configuration of an n-p-n transistor, the base-emitter junction is forward biased.

When the base-emitter voltage $V_{BE}$ is increased, the forward bias increases, which leads to an increase in the base current $I_B$.

The collector current $I_C$ is related to the base current $I_B$ by the relation $I_C=\beta I_B$, where $\beta$ is the common emitter current gain.

Since $\beta$ is nearly constant for a given transistor, an increase in $I_B$ results in a proportional increase in $I_C$.

Therefore, $I_B$ increases and $I_C$ increases proportionally.

Answer: $I_B$ increases and $I_C$ increases proportionally