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The power rating of light bulbs tells how much electric energy in watts the bulb consumes when burning.
As an aside, a rule of thumb for estimating how much you are paying to burn a light bulb for a year, the number of watts equals the number of dollars. So if you burn a 40 watt bulb for a year it costs about $40. If only at night cut that in half and say it costs $20. If you burn 5 of the bulbs all year it's $200
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoThat means how much power the light bulb is consuming all the time when it's on.
Incandescent lightbulbs have one wattage rating, but the new CFL and LED lightbulbs have two wattage ratings:
- wattage - this is the actual power consumed
- equivalent wattage - this is the wattage that would be consumed by an incandescent lightbulb that produced the same amount of light
Wiki User
∙ 14y agoWatts are units of power. In simplified terms, power = voltage x current. So if a 120W light bulb is plugged into a 120V standard outlet, it will draw 1 Amp of current (120W = 120V x 1A).
Wiki User
∙ 9y agoIt describes the amount of electric power the bulb uses.
Wiki User
∙ 11y agoThe number of watts (= energy per second) consumed by the bulb when lit.
Wiki User
∙ 13y agoThe power; the rate of how power is converted from electrical energy to light and heat energy.
Wiki User
∙ 13y agoIt stated the amount of energy that the bulb will consume when the bulb is in operation.
Wiki User
∙ 12y agoThe power it consumes
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How does a light bulb's wattage affect the heat detected above a light?
the higher the wattage is the hotter it gets
How many 1.5 volt batteries does take to light up a big light bulb?
Is the bulb a 1.5 volt bulb? A 3 volt bulb? A 12 volt bulb or a 120 volt bulb?Or does it have some other voltage such as 230 volts which is very common in Europe and many other countries of the world?What is the wattage of the "big light bulb"?This question cannot be answered without knowing at least the voltage and the wattage of the light bulb that is being asked about.
How much wattage does a light bulb need?
Also CFL and LED light bulbs use much less actual wattage than their equivalent wattage. It is best to look at the datasheet for each individual type of light bulb. They can vary from milliwatts to kilowatts, depending on the purpose the light bulb was intended for.
Does the size of the light bulb affect how much energy it uses with wire and a battery?
No, only the resistance of the filament counts (normally marked as "wattage" on the bulb).
Can you use a 130 volt light bulb on a 120 volt supply?
Yes, in fact that is what a rough service bulb is rated at. The bulb used on a 120 volt system will have a reduced wattage output as to what it would be on 130 volts.
Three bulbs of different watts are connected in series - which bulb will burn brightly - the higher wattage bulb or the lower?
lower wattage bulb
What are the wattage requirements for outdoor string lights?
The wattage will depend upon the type of bulb and the number of lights on the string. It will tell you on the package what each bulb requires in wattage, so you only need to multiply that by the number of bulbs in the string. so, number of bulbs x wattage requirement for each bulb = wattage requirement.
What is the best wattage bulb to use in a bedroom lamp?
The wattage of bulb one uses in a bedroom lamp depends on several factors. If it is a lamp used for back ground lighting or a night lamp, one would use a very low wattage bulb. If it is for a bedroom reading lamp, one would want a stronger wattage. The biggest factor on deciding what wattage to use is the wattage suggested by the lamp manufacturer. All lamps are marked with recommend bulb wattage.
Does a fluorescent bulb emit the same amount of heat as a metal halide bulb of the same wattage?
No, a fluorescent bulb does not emit the same amount of heat as a metal halide bulb of the same wattage.
What is the wattage for zero bulb?
15 watts
What is the wattage on an 1057 bulb?
21 Watt
Can I replace a heat lamp bulb with a regular bulb?
Yes, as long as the voltage is the same and the bulb has the same or less wattage. The fixture is rated at a certain wattage that can be found on a label somewhere on the fixture. Never use a larger wattage than what is stated on this label.
Can you use a 120 Watts energy savings bulb on a 240 ceiling socket?
You can use a lower wattage bulb on a higher wattage fixture provided the voltage rating is the same and the bulb base is the same.
Will 60 watt bulb put out same wattage at 50 and 60 hz?
Most equate wattage with the amount of light a bulb will put out. But, the wattage is the result of the resistance of the element and the voltage and is the amount of heat. the frequency is unrelated.
Does a 25 watt light bulb draw more current than a 60 watt light bulb?
No, a higher wattage INCANDESCENT light bulb uses more current than a lower wattage INCANDESCENT light bulb. Some CF and LED bulbs are rated by the amount of light that an incandescent bulb would produce, but they are also rated by the wattage that they use.
What wattage bulb does a lava lamp use?
the bulb is usually 30 or 40 watts
How does the amount of magents and wire affect the brightness of a light bulb?
The brightness of a light bulb directly has no direct relationship with magnets and wire. The bulbs brightness is determined by the wattage of the bulb. The higher the wattage of the bulb the brighter the bulbs light output.
