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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.
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 old is the light bulb?
The "The Centennial Light" 4 watt light bulb which was first lit in 1901 and is still in use today at a fire station in Livermore, California.
Can you light a 7 watt bulb with 4 AAA batteries?
yes
How much energy does a nightlight use compared to a 100 watt bulb?
An incandescent nightlight bulb is either 4 watt or 7 watt. A 4 watt bulb uses 1/25th (0.04) the power of a 100 watt bulb. A 7 watt bulb uses 7/100th (0.07) the power of a 100 watt bulb. There are LED and other types of nightlights that use much less power than this. To find the energy total used multiply the power (in watts) by the total time the light is on (in hours) to get energy (in Wh). If you want kWh divide this by 1000 as a watt is 1/1000th of a kW.
Can you use 220 volt light bulb on 120 volt system - I know the reverse would probably blow the bulb so wouldn't European 220 Volt do ok in 120 volt socket or would it be dimmer than it normally would?
Yes a 220 volt light bulb will run on a 120 volt circuit but at 1/4 of the wattage that the light bulb is rated at. A 100 watt light bulb on 220 would would be equal to a 25 watt light bult on 120 volt system.
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
Why is a 100 watt bulb brighter than a 25 watt bulb?
A 100 watt bulb is brighter than a 25 watt bulb because it consumes more electrical power, which in turn generates more light output. The higher wattage allows the bulb to emit more brightness and illuminate a larger area.
How much wattage is in a CFL?
So to replace a traditional 60-watt bulb, buy a 15-watt CFL: 60-watt incandescent / 4 = 15 watts. Note: Some brands of 60-watt equivalent CFLs still do not seem to give off as much light as a 60watt incandescent bulb.
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 kilowatt hours does 4 100 watt light bulb use in 24 hours?
Add up all the individual watts, convert everything to kilowatts, then multiply by the number of hours.
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.
