Get ready for the FCC General Radiotelephone Operator License (GROL) exam. Study with flashcards and multiple choice questions, each with hints and detailed explanations. Prepare effectively for your licensing test!

Multiple Choice

An L-network consists of which two passive components?

An L-network uses one inductor and one capacitor to transform impedance. The idea is to place one reactive element in series and the other in parallel (to ground) so that the combination cancels the reactive part of the load and adjusts the resistive part to match the source. This simple two-element network is why it’s called an L-network—the layout of the components forms an L shape in schematic diagrams. A transformer or a resistor would not serve this specific two-element reactive matching role; a transformer provides coupling and impedance transformation differently, and a resistor would simply dissipate power rather than provide the needed reactive cancellation.

An L-network uses one inductor and one capacitor to transform impedance. The idea is to place one reactive element in series and the other in parallel (to ground) so that the combination cancels the reactive part of the load and adjusts the resistive part to match the source. This simple two-element network is why it’s called an L-network—the layout of the components forms an L shape in schematic diagrams. A transformer or a resistor would not serve this specific two-element reactive matching role; a transformer provides coupling and impedance transformation differently, and a resistor would simply dissipate power rather than provide the needed reactive cancellation.