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What does 40W mean on a light bulb?
It means that the power consumption of the bulb is 40 watts.
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.
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.
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.
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).
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.
What do you need to know to calculate how much energy a light bulb uses?
Okay so I searched for 3 hours on Google and no answer so here it is: 40W - 110C; 60W 140C; 100W 136C; and 100W Flood (Red Green Yellow) 125C. Standard bulb, 117VAC, 60Hz, facing up (edison Base down, free air, 22C ambient, measured with K-type thermocouple, calibrated in last 12 months....
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.
What can you power with 2000 watts of electricity?
Any devices using 240 volts up to 8 amp and any devices using 120 volts up to 16 amps.
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.
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.
