Question

Consider the graph of \( I_C \) vs \( V_{CE} \) shown below for a transistor. Find the correct relation for region 3 in the diagram.

• A. \( I_C = I_C(\text{sat}) \) and \( V_{CE} = V_{CE(\text{sat})} \)
• B. \( I_C = I_C(\text{sat}) \) and \( V_{CE} = V_{CC} \)
• C. \( I_C = \beta I_B \) and \( V_{CE} = V_{CE(\text{sat})} \)
• D. \( I_C = \beta I_B \) and \( V_{CE} = V_{CC} \)

Hint:

In saturation region, the transistor behaves as a switch, with a fixed collector current and a low collector-emitter voltage.

Answer 1

The Correct Option is A

In the saturation region of a transistor, the collector current \( I_C \) becomes constant and is equal to the saturation current \( I_C(\text{sat}) \). Similarly, the collector-emitter voltage \( V_{CE} \) is also at a fixed value, which is \( V_{CE(\text{sat})} \). Thus, the correct answer is \( I_C = I_C(\text{sat}) \) and \( V_{CE} = V_{CE(\text{sat})} \).