Which of the following symbols indicates an LED in a circuit?

The symbol that indicates an LED (Light Emitting Diode) in a circuit is distinctive and indicative of its functionality. The LED symbol is often represented by a diode symbol with two arrows pointing away from it, signifying the emission of light. This design highlights the key characteristic of an LED, which is its ability to emit light when current flows through it in the forward direction.

Understanding the context of where the LED symbol fits into the broader category of electronic components can enhance this understanding. For instance, the diode symbol denotes a standard diode, which does not emit light, while the loudspeaker symbol represents a component that converts electrical energy into sound, and the filament lamp symbol depicts a traditional light bulb, which uses a different mechanism based on heated filaments. Each of these components has a distinct purpose and representation in a circuit diagram, highlighting the unique identification of the LED within the context of electronic components.