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How much does it cost to run a watt light bulb for 1 hour if electricity cost 10 cent per kilowatt-hour?

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2012-11-28 12:09:38
2012-11-28 12:09:38

A 1-watt bulb uses 3600 watt-hours every hour, which is 1/1000 of a kilowatt-hour, so the cost is 0.01 cents.

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1 kilowatt-hour is 1000 watt-hours and 60 watt bulb consume during 1 hour 60 watt-hours of electricity, so then it costs 0.6 cent =>60/1000=0,06*price of 1 kilowatt-hour = 0.6 cent


A typical 20-watt compact fluorescent light bulb can produce about as much light as a 100-watt incandescent light bulb. There is an 80 per cent improvement in efficiency.



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.


It depends on the bulb's wattage (its actual wattage, not the incandescent equivalent) and the cost of electricity where you're using the bulb. For example, suppose you have a CFL that draws 14 watts and electricity in your area costs 12 cents per kilowatt-hour. Using very rough approximations, in one hour your bulb would use about 1/70 of a kWh (1000/14 = 71.3), so the bulb would cost about 1/6 of a cent (12/71) to operate for an hour.


1 The light bulb was invented in 1879 by Thomas Alva Edison. 2 When you turn on a light bulb only 10 per cent of the electricity used is turned into light, the other 90 per cent is wasted as heat. 3 In the UK we waste £140 million a year by leaving our lights switched on unnecessarily - this causes 900,000 tonnes of CO2 emissions, enough to fill 180,000 hot air balloons! 4 Low energy light bulbs last on average up to 12 times longer than traditional fluorescent bulbs. 5 Each low energy light bulb you install in your home could save you as much as £9 per year in energy costs, or £100 over the bulb's lifetime 6If every UK household installed just three compact fluorescent light bulbs in place of traditional bulbs, enough energy would be saved in a year to supply all street lighting in the UK 7 UK households use £1.9 billion worth of electricity every year on lighting 8 Energy efficient bulbs last up to 12 times longer than their inefficient counterparts 9 A heavy coat of dust can block up to half of the light 10 If everyone installed one energy-saving light bulb the carbon dioxide emissions saved would fill the Royal Albert Hall nearly 2000 times. Hoped this helped! :)


A conductor. A US one-cent coin is made of a copper alloy, which is a good conductor of both heat and electricity.


London underground's electricity consumption in 2007 and 2008 was 0.4 per cent of all the electricity used in the UK and 2.8 per cent of London's total usage. The total annual electricity consumption is just over one terawatt hour each year. cheers ... Skunkfarmer . New Hampshire USA


If you are asking if, for the same wattage, a halogen bulb produces more light output than a traditional incandescent bulb, the answer is yes.This means that, to get a given amount of light, you can sometimes use a lower wattage halogen bulb than what you would need to use if it were a traditonal incandescent bulb.So another answer to your question is yes, you can save money on the running cost for electricity if you use a halogen bulb which has a lower wattage than the traditonal incandescent bulb.However, to be able to use the halogen type, you might have to change the bulb-holder and shade used in your present light fitting!NoteWe pay for the total energy consumed, not for the current taken by any particular sorts of bulbs - or indeed any types of appliances - whilst they are being used.The cost of the energy used is calculated in units of kilowatt-hours at whatever charge is relevant for the time of day, all according to the agreement you have with the energy supplier in your area. (Usually an energy utility company.)For the full details of the costs and charges made by the utility company that supplies your area, just read one of your electricity bills.If you pay 20 cents per kilowatt-hour (kW-h) of energy and you use a 50 watt bulb for one hour, you'll pay for (50 x 20) / 1000 cents, which equals just 1 cent - no matter what type of lamp you use. In particular it is worth noting that the bulb's voltage doesn't come into this calculation.


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Check the connector and the wiring by removing the two Phillips head screws on the sides of the light assembly and removing it. Check for chaffed or broken wires, also check that the center conductor of the lamp assembly is still connected to the positive lead and that there is still spring tension to bring it into contact with the cent of the bulb, also check that the ground lead is still connected to the lamp holder.


The Australian five-cent coin is composed of 75% copper and 25% nickel. Both of these metals are comparitively good electrical conductors. Copper, in particular, is the second best, after silver.


1 cent, 2 cent, 3 cent,4 cent, 5 cent, 10 cent, 17 cent, 27 cent, 41 cent, 42 cent, 59 cent,60 cent,62 cent,63 cent,72 cent, 75 cent,80 cent,84 cent,94 cent, $1,$4.80, $5, and $16.50. There are 25-cents for pre-sorted mailing by large mailers who have permits to use them.


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100 is un cent 101 is cent-et-un 102 = cent-deux 103 = cent-trois 104 = cent-quatre 105 = cent-cinq 106 = cent-six 107 = cent-sept 108 = cent-huit 109 = cent-neuf 110 = cent-dix 111 = cent-onze 112 = cent-douze 113 = cent-treize 114 = cent-quatorze 115 = cent-quinze 116 = cent-seize 117 = cent-dix-sept 118 to be continued


The extent of smoothness tells us that how much light will be reflected off any substance.If the surface is frictionless the light reflected will be cent percent.


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35.63 cents = 36 cent (to the nearest cent).35.63 cents = 36 cent (to the nearest cent).35.63 cents = 36 cent (to the nearest cent).35.63 cents = 36 cent (to the nearest cent).


Sorry, there isn't a 3 cent Eisenhower stamp. There is a 6 cent, 8 cent, 22 cent & 25 cent, but no 3 cent.


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AnswerEnergy efficiency measures the per cent rate, or ratio, at which a device converts an energy source into a desired resulting energy. Consider the common household light bulb. It converts electricity into three categories of energies: visible light (the desired resulting energy); invisible light (including infrared); and heat. Only the visible light is useful to people in common lighting applications, and is therefore considered the desired type of energy. The energy efficiency of the light bulb, therefore, describes ratio of visible energy generated to the electrical energy consumed. .Energy Efficiency = desired resulting energy / consumed source energy.An automobile engine converts chemical potential energy (typically gasoline) into mechanical energy through a controlled internal combustion. Some of the converted energy is lost directly to heat, some is lost to friction (which turns into heat), some energy is lost to acoustic (sound) energy, and some source energy is lost because the motor did not completely burn all of the fuel, and let the unburned fuel escape with the exhaust. The proportion of the generated useful mechanical energy compared to the amount of potential chemical energy (the volume of gasoline) the engine consumed is the energy efficiency. Even here, the "useful" mechanical energy requires further analysis. An automobile engine diverts some of its mechanical energy to drive the cam shaft, the alternator, and various pumps, vacuums, fans, and compressors. The useful mechanical energy is what remains to drive the wheels after servicing all these ancillary mechanical energy consuming devices..Energy efficiency is often misunderstood. It does NOT describe how much energy is consumed - quite the opposite - it describes how much useful energy is generated. A 25 Watt incandescent light bulb consumes exactly the same amount of electrical energy, and creates exactly the same amount of resulting energy, as a 25 Watt compact fluorescent light bulb. The difference is the 25 Watt compact fluorescent light bulb generates more useful visible light than its incandescent counterpart. The left-over energy is usually considered to be wasted, and it is therefore more costly to achieve the same desired effect..Practicing energy efficiencies can lead to surprising results. For example, a 100 W incandescent light bulb is no more wasteful than a 25W compact fluorescent light bulb on a cold winter's night, because the "wasted" thermal energy is required to heat the house anyway. In effect, less house heating energy is required because the "wasted" energy from the incandescent light bulb partially heated the house already, and the end result is nearly energy neutral. By contrast, using an incandescent light bulb instead of a compact fluorescent light bulb in the summer while the air conditioning is running is doubly wasteful - not only will the incandescent light draw more electricity to produce the same amount of light, but the air conditioner will also consume even more electricity again to rid the house of the wasted heat the incandescent light bulb generated.AnswerRefers to programs that are aimed at reducing the energy used by specific end-use devices and systems, typically without affecting the services provided. Such savings are generally achieved by substituting technically more advanced equipment to produce the same level of end-use services (eg lighting, heating, motor drive) with less electricity. .A good place to start is www.energyefficientnation.org to get the information and tools you need to be energy efficient.


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