What is the full form of LED ? Why are LED bulbs considered energy efficient? Now explain why LED bulbs are preferred over filament bulbs.
[5 MARKS]
What is the full form of LED ? Why are LED bulbs considered energy efficient? Now explain why LED bulbs are preferred over filament bulbs.
[5 MARKS]
Acronym expansion: 1 Mark
Reason out : 2 Marks
Explanation: 2 Marks
LED stands for Light Emitting Diode.
LEDs are “directional” light sources, which means they emit light in a specific direction, unlike incandescent and compact fluorescent bulbs, which emit light and heat in all directions. For this reason, LED lighting is able to use light and energy more efficiently in many applications.
LED bulbs are increasingly preferred over filament bulbs because they switch on instantly, heat emitted is low, and are not made of any hazardous materials, besides needs to be replaced only on an average of 400 hours only. This is unlike filament bulbs, which are , fragile, and heat emitted is high , in addition to requiring frequent replacement.
Acronym expansion: 1 Mark
Reason out : 2 Marks
Explanation: 2 Marks
LED stands for Light Emitting Diode.
LEDs are “directional” light sources, which means they emit light in a specific direction, unlike incandescent and compact fluorescent bulbs, which emit light and heat in all directions. For this reason, LED lighting is able to use light and energy more efficiently in many applications.
LED bulbs are increasingly preferred over filament bulbs because they switch on instantly, heat emitted is low, and are not made of any hazardous materials, besides needs to be replaced only on an average of 400 hours only. This is unlike filament bulbs, which are , fragile, and heat emitted is high , in addition to requiring frequent replacement.
