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that is dependant on the wattage of the bulb, the wattage 40W, 60W, 100W, is the rated power that a bulb will use.
1kW is equal to 1000W
1kWh is equal to 1000W per hour.
kW stands for kilo watt
I hope that helps
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoLightbulbs are meant to produce light but they also produce heat energy that is wasted. This depends on the efficiency. A light bulb that is more effecient wouldn't waste as much energy on heat as a less effecient lightbulb.
Wiki User
∙ 11y agoThat refers to the electrical energy that is converted to heat. For some purposes this may be desirable, but usually this is waste energy. In an old-fashioned incandescent light bulb, perhaps 5% of the electrical energy is converted to light, the remainder is wasted. Newer light bulbs (fluorescent light bulbs, and even more so LED lamps) are much more efficient.
Wiki User
∙ 14y agoHeat.
Heat.
Heat.
Heat.
Wiki User
∙ 11y agoBecause some of the energy is transformed in to heat energy which goes into the surroundings
Wiki User
∙ 11y agoA light bulb uses electrical energy to produce light. It also produces heat and other electromagnetic energy which is not typically used by the end user.
Wiki User
∙ 11y agoheat energy
Wiki User
∙ 14y agoHeat.
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Why should the filament of bulbs be thermally isolated?
Energy, in the form of electricity, causes the filament to heat up and give off light. Any energy which the filament loses by heating the bulb does not create light, and so is wasted. Thermal isolation minimizes the heat loss of the filament, and therefore reduces wasted energy.
When a lamp is turned on electrical energy changes into what form of energy?
The older generation of bulb(one in witch heating metal coil was used) convert electrical energy into both heat and light energy and consume more energy as some energy is lost as a heat energy. The newer generation of electrical bulb (C.F.L.) convert almost all electrical energy into light energy and consume much less electrical energy.
By wasting water does it affect the greenhouse gases?
Yes, indirectly, more energy is used to replace the wasted water.
What is the advantage of having a brushed nickel floor lamp?
The advantage of having a brushed nickel floor lamp is that it is energy efficient. Another advantage of having this lamp is that it has a good finish and it does not take up much space in a room.
How much energy is wasted using geothermal energy?
The method used to convert geothermal steam to electricity directly affects the amount of waste generated. So basically it depends on how much you use.
How much energy is wasted on Christmas lights?
The power is specific to the lamp set.
What is heated by the thermal energy wasted by Portable Radio?
portable radio food mixer hairdryer gas fire fridge table lamp
Is it always easy to collect wasted energy and use it?
Once the energy is wasted, you can't convert it back to useful energy.Once the energy is wasted, you can't convert it back to useful energy.Once the energy is wasted, you can't convert it back to useful energy.Once the energy is wasted, you can't convert it back to useful energy.
What is heated by the thermal energy wasted by a food mixer?
kinetic energy is wasted
Which of the following is the type of energy light has?
Light is energy. But it also has heat energy, because if it is alight then it warms up. However, this is actually kinetic energy (heat is actually kinetic) because the particles are moving to create heat. This would be wasted energy in a lamp.
Wasted energy produced by motor bike?
Noise and heat is wasted energy from motorcycles.
What is the usefull and wasted energy in a hair dryer?
Sound energy from the hair dryer is wasted.
Why is heat the most common form of wasted energy?
Heat energy is the most wasted form of energy.
What is the rule for working out how much electricity you are wasting?
Energy input minus useful energy output. So if you were using a lamp you could work out how much energy was going in and how much was actually coming out in light. Then whatever's leftover is being wasted.
What happens to wasted energy from a boiler?
the energy wasted by the system(boiler) is gained by the surrounding atmosphere
Most energy transformations produce what form of energy?
In most energy transformations, part of the energy is wasted. Much of the wasted energy is usually converted to heat.
What is the wasted energy from a rocket?
The wasted energy in a car is electrical energy
