Electrically, a 10-watt bulb uses 75% less energy than a 40-watt bulb. For the same circuit voltage, let's say 120v, a 10-watt bulb would only draw 0.083 amperes, compared to 0.33 A for a 40-watt bulb.
Light-output-wise, they may not have the same ratio of light output. If a 40-watt lightbulb provides 400 lumens of light, a 10-watt lightbulb that is more energy-efficient than the 40-watt bulb may produce more than 100 lumens which is greater than 1/4 of the light output of the 40-watt bulb. A 10-watt bulb that is less energy-efficient than the same 40-watt bulb would produce less than 100 lumens of light.
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If the two bulbs use the same technology the 100 w bulb is 10/6 times brighter than the 60 w. Incandescent bulbs give about 10-12 lumens per watt Halgogen gives about 15-18 lumens per watt CFL (low-energy) gives about 50 lumens per watt.
It's a halogen bulb
NO Incandescents produce 10 lumens per watt, halogens about 13 lumens per watt, fluorescents and LEDs 40-50 lumens per watt. Lumens measure the brightness, watts measure the speed at which electrical energy is used.
You multiply the watts by the seconds. 10 hours is 36,000 seconds, so the watt seconds is 60 x 36,000 Answer 2,160,000 watt-seconds You can also say the bulb uses 60 x 10 or 600 watt-hours.
40 watts means that it uses 40 watts of electrical power. Lumens measure the amount of light produced. An incandescent bulb produces around 10 lumens per watt.
A guide figure for an incandescent bulb is 10-12 lumens per watt for ordinary incandescent, 15 lumens per watt for halogen type.
Any bulb can produce 10 J or 100 J depending on how long it is left switched on. A 100 w bulb consumes 100 joules of energy each second, while a 10 w bulb needs to run for 10 seconds to use 100 joules. An incandescent bulb produces about 10 lumens per watt, A halogen bulb produces 13 lumens per watt, Compact fluorescent bulbs and LEDs produce 50-60 lumens per watt.
Any electrical device "raises your electric bill", but only when it is activated. (only when you turn on the switch) A 100 watt bulb, left on for 10 hours uses 1 KW-hr. A 10 watt bulb left on for 100 hours uses 1 KW-hr. It becomes relatively simple to understand that if the power company charges you a set price (for example $0.15/KW-Hr) the 10 watt bulb would raise your electric bill much more slowly than would the 100 watt bulb.
Incandescents produce about 10 lumens per watt.
Lumens measures how bright it is, watts measures how much electric power it uses up. An old-type incandescent bulb produces about 10 lumens per watt. A halogen produce about 13 lumens per watt. A fluorescent (energy saving) bulb produces about 50 lumens per watt. LEDs produce somewhere around the same as a fluorescent.
About 50 lumens per watt for a fluorescent tube, compared to 10 lumens per watt for an incandescent bulb.
Incandescent bulbs give about 10 lumens of light per watt of electric power Halogens give about 13 lumens per watt CFLs give about 50 lumens per watt So it depends on the type of bulb.
The amount of light (Lumens) delivered by a light bulb cannot be determined by it's wattage. Bulbs of any wattage by different manufacturers can have different output (lumens). Everything else being the same, a 34 watt 110volt bulb will put out about half the light than a 34 watt 220 volt bulb, and a 12 volt one will put out about 10% of the light as the 120 volt one will.
carrots, potatoes, and mush roomms.
The bulb takes a power measured in watts. Each hour it uses energy equal to that number of watts, as watt-hours. A 60 W bulb uses 60 watt-hours in 1 hour, or 600 watt-hours in 10 hours.
1 Joule = 1 Watt.sec, ie 1 Watt for 1 second. A 75 Watt bulb dissipates 75 Joules every second, so the answer is 10/75 of a second = 0.1333 seconds
As long as the lamp holder will take the larger wattage lamp and the current of the circuit is sized to take the larger current then yes, the lamps should be interchangeable.
A Watt is a Joule per second. Joules measure energy and Watts measure power, which is the rate of energy used. Therefore, if you use a 60 Watt light bulb for 10 seconds, you consume 600 Joules.
60 days is 24x60 hours, so the energy used is 60x24x60 watt-hours, 86400 watt-hours or 86.4 kilowatt-hours or units. If it is a 60-watt incandescent bulb it could be replaced by a 12 watt low-energy bulb, and in the same time that would use only 17.3 units, saving 69 units costing about £10.
That depends on so much more then just the watt of the bulb, but if you have two identical bulbs where the only difference is the amount of watt, then logic dictates that 25watt is brighter then 10watt
A 60-watt bulb uses 60 watt-hours or 0.06 kWh each hour, so the cost is 0.06 x 10 cents, 0.6 cents per hour.
Average figures: Incandescent: 10 lumens per watt Halogen 13 lumens per watt CFL (low-energy) 50 lumens per watt