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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.
What does 40W mean on a light bulb?
It means that the power consumption of the bulb is 40 watts.
How bright is 400 lumens?
This is a bit less light than a 40W incandescent bulb (much less than a 9-watt CFL bulb, but twice as much as a 5-watt CFL mini-bulb).
How bright is 55 lumen?
Not very bright at all. A 40W light bulb is about 450 lm, so a 55 lm source would be about 1/8th as intense as a 40W bulb.
How much electrical energy does a 40 W light bulb use if it is on for 12 hours?
40w=.04kWh.04*12 hours=.48 kWh
How much heat energy will a 40W light bulb give out in 3 minutes?
Joules = watts x seconds. Just convert the minutes to seconds, then multiply.
Shouldn't a lamp always be able safely to accept up to a 40W compact fluorescent light bulb if it is rated to accept a 40W incandescent light bulb--barring any physical size contraints?
Yes, your assumption is correct. Lamp fixtures are rated on how well they dissipate the heat given off from an incandescent light bulb. As CFL lamps run much cooler there is no problem using them in the same rated fixture that is incandescent rated.
Why is a light bulb on a GE Profile fridge keep burning out?
If you mean the 40 watt light bulb inside, are you sure you are replacing it with a special 40W appliance bulb? A regular bulb will not last long at all inside of a refrigerator.
Who consume more energy a 40W bulb or 40W tube?
It's the 40W tube! because it's nonlinear: indeed it generates harmonics which increase the apparent power and thus the apparent energy.
Will four 50 watt halogen bulbs give as much light as eight 40-watt incandescent bulbs?
If the fixture was the exact same, and one held a single bulb and one held a double bulb then NO. The light given off bulbs is marked as wattage when you look at the package. So a 100w bulb has less light than two 75w bulbs together, because the two equal 150w.
Which bulb will glow brighter with 220V - 40W or 400W?
-- The voltage makes no difference. -- The 400W device dissipates ten times as much power as the 40W device does. We don't know how much of each one's power consumption is radiated in the form of heat, UV light, etc. But if the spectral distribution of their output is similar, then the one that dissipates more power produces more visible light, and appears brighter.
Can you use a low energy G9 40W bulb in a light fitting that states a maximum of 25W G9 normal halogen bulb?
The heat dissipation is what the fixture is rated for. They are saying maximum heat of 25 watts so 40 watts is going to be too much.
