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2*40*24 watt hours
in practical uses, kilowatt hours are used
divide by 1000 to change the units
thus
two 40 watt bulbs in 24 hours use 1.92 kilowatt hours
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∙ 14y ago
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What is the Electrical power for a lightbulb?
The power rating for a light bulb (like "40 W") tells how much electrical power the light bulb uses. All of the power used by the bulb is either converted into light or heat. In an incandescent bulb, most of the energy becomes heat. In a fluorescent bulb, more of it becomes light.
What part of a light bulb has the most resistance?
the actual filament itself in a light bulb has the most resistance,this is why it glows and produces light,the rest of the bulb is sufficiently engineered to carry the voltage and current applied to it without producing too much heat.
How much energy does an incandescent lightbulb use versus a fluorescent?
Yes that's true fluorescent bulbs are better because it usess 75% less energy and works longer than a incandescent light bulb. Yes...and no. It is true that power usage decreases with fluorescent balb usage. However, one must take into account that they pollute more (i.e. mercury and other heavy metals).
How much energy does it take to light fluorescent a light bulb for 1 hour?
The average home fluorescent lamp consumes 40W of power. Running for one hour it will consume 0.04 KWh. Units of electricity are charged per Kilowatt hour.
How much does it cost to run a 60 watt light bulb for 15 minutes?
ahm...depends on the cost per watt charged by your local provider... how much is it?
How much electricity does electric bulb uses?
The quantity of power consumed by a light bulb is dependant on the wattage of the bulb.
How much light is used to power a lightbulb with a solar panel?
48,000 gigawatts
How much energy does solar power produce?
solar cells generate electric currents directly from the sun light
What is the Electrical power for a lightbulb?
The power rating for a light bulb (like "40 W") tells how much electrical power the light bulb uses. All of the power used by the bulb is either converted into light or heat. In an incandescent bulb, most of the energy becomes heat. In a fluorescent bulb, more of it becomes light.
How much energy do you save with 10 light bulbs off?
That depends on the power used by each light bulb. Look at the specifications for a specific light bulb, then multiply the power by 10. Note that energy = power x time; that is to say, the energy spent by a light bulb depends on its power, but also on how long you keep it on. Specifically, watts = joules x seconds.
How much power does a light bulb use if the current is 3 and the voltage is 7?
21
How much power does it take to light a lamp post?
Find out what the wattage of the bulb in the fixture is and you will have your answer.
What do you need to know to calculate how much energy light bulb uses?
You should be able to read the power off the bulb or its packaging.
How much eletricity does a light bulb take?
The amount of electrical energy it uses in a fixed time is the power, measured in watts, that should be marked on the light bulb when it's bought.
How much energy does a 5 watt light bulb?
That varies a lot, depending on the type of light bulb. The old-fashioned incandescent light bulbs produce much less light, for the same power, than the fluorescent light bulbs.That varies a lot, depending on the type of light bulb. The old-fashioned incandescent light bulbs produce much less light, for the same power, than the fluorescent light bulbs.That varies a lot, depending on the type of light bulb. The old-fashioned incandescent light bulbs produce much less light, for the same power, than the fluorescent light bulbs.That varies a lot, depending on the type of light bulb. The old-fashioned incandescent light bulbs produce much less light, for the same power, than the fluorescent light bulbs.
How much volts does a small light bulb need to be powered?
110 volts is what comes out of an average wall socket in America. A 100-watt bulb would be powered by 110 volts. You need to be more specific in your question to get a good answer. Small can't be measured.
How much wind power to light a bulb?
You need a wind power generator to make the electric energy to hook your light to. Maybe charging a battery with the wind generator and running the light bulb off the battery will provide better service.
