[amp_mcq option1=”Decreases” option2=”Stays the same” option3=”Increases” option4=”Can be any of above E. None of the above” correct=”option3″]
The correct answer is: C. Increases.
The load line is a graphical representation of the relationship between the collector current and collector voltage of a transistor. It is a straight line that is drawn on a graph with the collector current on the vertical axis and the collector voltage on the horizontal axis. The load line is determined by the values of the power supply voltage and the resistance of the collector load resistor.
The Q point is the point of intersection of the load line and the transistor’s transfer characteristic curve. The transfer characteristic curve is a graph that shows the relationship between the base current and the collector current of a transistor.
When the Q point moves along the load line, the collector current increases. This is because the collector voltage is decreasing, which causes the transistor to turn on more. As the transistor turns on more, the collector current increases.
The options A, B, and D are incorrect because they do not accurately describe what happens when the Q point moves along the load line. Option A states that the voltage decreases when the current increases. This is not always the case. The voltage can decrease, increase, or stay the same when the current increases, depending on the specific transistor and the operating conditions. Option B states that the voltage stays the same when the current increases. This is also not always the case. The voltage can decrease, increase, or stay the same when the current increases, depending on the specific transistor and the operating conditions. Option D states that the voltage can be any of the above when the current increases. This is correct, but it is not a complete answer. The voltage can decrease, increase, or stay the same when the current increases, depending on the specific transistor and the operating conditions.
Option E is incorrect because it states that none of the above is true. This is not true. The voltage increases when the Q point moves along the load line.