Question

rank the types of light bulb from least efficient to most efficient.
1.
what is the next least efficient lightbulb?
fluorescent light bulb
incandescent light bulb
led light bulb

Explanation:

Incandescent light bulbs work by heating a filament until it glows, wasting a lot of energy as heat. Fluorescent bulbs use gas and mercury vapor to produce UV light which is converted to visible light, more efficient than incandescent. LED bulbs use semiconductor materials to emit light directly, being the most energy - efficient among the three.

Answer:

Incandescent light bulb, fluorescent light bulb, LED light bulb