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If the socket threads of the lamp are the same then yes the bulbs can be interchanged. The 5 watt bulb will glow brighter than the 4 watt bulb. If by a 4 watt light you mean a 4 watt fixture, then it is not recommended to place a larger wattage lamp in a fixture that is rated by the manufacturer at a specific operating wattage
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Do 100-watt light bulb use energy 4 times as fast as does a 25-watt bulb?
Yes, that is what the numbers mean.
How bright is 70 lumens?
A little bit less than a 25 watt incandescent bulb - the the table below:Bulb brightnessA 100 watt Bulb is rated at approximately 1700 lumensA 60 watt incandescent bulb is rated at approximately 800 lumensA 40 watt bulb is rated at approximately 400 lumensA 25 watt bulb is rated at approximately 180 lumensA 4 watt night light bulb is rated at approximately 20 lumens
How may watts is 400 lumens?
It is not possible to directly convert lumens to watts because they measure different things - lumens measure brightness while watts measure power consumption. The relationship between lumens and watts depends on the efficiency of the light source.
How long did the first light bulb stay lit?
Thomas Edison's first successful light bulb experiment lasted approximately 13.5 hours before burning out.
How many 100 watt bulbs is equal to one 400 watt bulb?
One 400 watt bulb is equivalent to four 100 watt bulbs in terms of total power output.
