Topic: Analog Circuits
If a transistor operates at the middle of the dc load line, an increase in the current gain will move the Q point
- A. Off the load line
- B. Nowhere
- C. Up on the load line
- D. down on the load line
Answer: C. Up on the load line
Explanation: Assuming a fixed base current bias circuit, an increase in current gain ($\beta$) leads to an increase in the collector current ($I_C = \beta I_B$). A higher $I_C$ causes a larger voltage drop across the collector resistor, thus decreasing $V_{CE}$. This shifts the Q-point higher up along the DC load line, closer to the saturation region.