Which of the following statements regarding the edge of the saturation region (the boundary between saturation and other operation modes) is correct?Group of answer choicesWhen $V_{CE}=0$When $V_{CB}=0$When $V_{BE}=0$There is no current flowing through the transistor.

The correct statement regarding the edge of the saturation region (the boundary between saturation and other operation modes) is when $V_{CE}=0$.

Here's why:

In a bipolar junction transistor (BJT), the saturation region is the mode where both the base-emitter (BE) junction and the base-collector (BC) junction are forward biased. This means that the voltage across these junctions is positive, allowing current to flow freely.

The edge of the saturation region is defined by the condition $V_{CE}=0$. This is because in the saturation region, the collector-emitter voltage $V_{CE}$ is very small and can be approximated to zero.

The other options are incorrect:

• When $V_{CB}=0$, the transistor is in the active region, not the saturation region.
• When $V_{BE}=0$, the base-emitter junction is not forward biased, so the transistor is off.
• If there is no current flowing through the transistor, it is in the cutoff region, not the saturation region.