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What does an incandescent light bulb produce?
Light by heating a filament inside the bulb with an electric current
What does the voltage supplied to the bulb determine?
The amount of electric current flowing through the filament
What is the rated voltage of a bulb?
The voltage at which it is designed to operate optimally
What happens when the voltage supplied to an incandescent bulb which is less than its rated voltage?
The electric current flowing through the filament is reduced
What does a reduced voltage result in?
The filament producing less heat and light, causing the bulb to burn dimmer
Since the filament is not heated to it’s maximum temperature:
It experiences less wear and tear, leading to a longer lifespan for the bulb
