LE D lighting is characterized by which of the following?

LE D lighting is characterized by which of the following?

• A. LED uses a filament heated until it glows
• B. LED produces light using light-emitting diodes and is more energy-efficient than incandescent and often more energy-efficient than fluorescent
• C. LED requires mercury vapor to produce light
• D. LED is a form of HID

Answer: (D)

LED lighting uses light-emitting diodes to emit light, a solid-state approach where light is produced when electrons recombine with holes in a semiconductor. This design makes LEDs highly energy-efficient, converting most electrical energy into visible light rather than wasted heat, and they typically last much longer than incandescent or fluorescent lamps. They don’t rely on a heated filament, mercury vapor, or gas discharge, and they don’t require the ballast that HID lamps use. Because of these qualities, LEDs are known for their energy efficiency compared with incandescent and often even more efficient than fluorescent lighting.

LED lighting uses light-emitting diodes to emit light, a solid-state approach where light is produced when electrons recombine with holes in a semiconductor. This design makes LEDs highly energy-efficient, converting most electrical energy into visible light rather than wasted heat, and they typically last much longer than incandescent or fluorescent lamps. They don’t rely on a heated filament, mercury vapor, or gas discharge, and they don’t require the ballast that HID lamps use. Because of these qualities, LEDs are known for their energy efficiency compared with incandescent and often even more efficient than fluorescent lighting.