Aircraft Electronics Technician Practice Test

Which transistor terminal carries the main output current in normal operation?

Base Gate Collector Emitter

Correct Answer:

Collector

Explanation:

The main current path in a transistor is between the collector and emitter, while the base provides the small control current. In normal operation, the collector current is the larger, output-serving current because it is amplified by the transistor (I_C is roughly β times I_B). The emitter current is the sum of base and collector currents (I_E = I_B + I_C), so it isn’t the primary output in typical configurations. The base is just the control input, and the gate is a control terminal in MOSFETs, not the main load-carrying path. Therefore, the terminal that carries the main output current is the collector.

Access more questions from this quiz

Continue to Aircraft Electronics Technician Practice Test for more practice questions and the full quiz experience.

Access More Questions