well it depends on the type of lamp but it should say on the packaging
Fluorescent lights use far less energy than any of the others listed.
Watts measure power. Energy is measured in joules and is the product of power and time. 1 joule = 1 watt for 1 sec Energy used in the example = 100 x 1 = 100 joules
No you can't. You can use a metal halide lamp of the exact wattage of the original mercury lamp. You cannot vary on wattage at all.
No.
Yes, fluorescent lamps may be powered by DC but they need a DC lamp controller instead of an AC ballast and starter. The DC lamp controller is more complex. I have a 12V lantern with fluorescent lamp tubes.
Many lamps use electrical energy, but some lamps use chemical energy, for example a kerosene lamp or a candle.
compare to different lamps mv lamp,hpsv lamps & cfl lamp these are how mush energy comsumed for 225w lamp
energy = power * time = 20w * 1hr = 20 watthours or 0.02 kilowatthours
a heat lamp is dumb so dont use it
Have to know the wattage of the lamp to answer this question.
Fluorescent lights use far less energy than any of the others listed.
Whatever you need to make the lamp work. If you plug it into a socket, it uses electrical energy; other lamps may use some chemical energy, for example in the wax or kerosene they burn.
Use 1/4, 1/5 the energy and last much longer.
There are many factors that go into calculating the energy usage of a light bulb. The wattage printed on the lamp is only the energy use of the lamp when it is new. Depending on the kind of lamp he energy required to run it will increase as it ages. For example a Metal Halide lamp can use up to 50% more power in the last 20% of its life.Another factor is the ballast that may be required to run the lamp. Each ballast has a "ballast factor" which can increase or reduce the overall energy usage of the lamp. Many ballasts have a factor as high as 1.2 which would increase the energy consumption of the lamp to 300 watts.AnswerThe question is asking about energy, not power as per the previous answer. To find the energy consumed by a lamp, or any device come to that, multiply its power rating by the time for which it is used. So a 250-W lamp will use 250 W.h (watt hours) of energy in one hour, 500 W.h in two hours, and so on. Energy is more-commonly expressed in kilowatt hours, for the purpose of billing however, where 250 W.h corresponds to 0.25 kW.h, etcAnswer: In an hour it uses 250 watt-hours. The average bulb probably uses 20-60 watt-hours each hour.
A lamp doesn't produce electrical energy; it utilises it. The power-rating of the lamp will tell you the rate at which that lamp uses expends energy at its rated voltage. For example, a 60-W lamp will expend energy at 60 joules per second.
That would depend on the sort of lamp it is. If it was a gas lamp it would be chemical energy If it was an electric lamp it would be electrical energy However you should understand that on Earth 99.9 % of the energy comes originally from the Sun. The Sun's energy is the ultimate source of stored chemical energy and the ultimate source of the electrical energy we use.
when you turn on a lamp it is first light energy to chemical energy!