800 watthours, = 0,8 kWH, over here about 10-20 eurocents I guess.
The average price of a fluorescent desk lamp is about $30. You can buy a fluorescent lamp for as much as $55, or as little as $17. It depends on the brand size of bulbs used in the lamp.
The prices for compact fluorescent lamps vary in price depending on size, where you buy them, and what materials they are made of.
The average cost depends on the size and wattage. The average life of a tv lamp is eight thousand hours. Here is more information on prices: http://www.dlptvreview.com/dlptvreviews/projection-lamp-replacement.html
I have a lava lamp from the 70's and it cost $20
A 40W fluorescent lamp typically draws around 0.33 amperes in a 120V circuit. This is calculated by dividing the power (40W) by the voltage (120V) to get the amperage.
On average, a 32W T8 fluorescent bulb running 24 hours a day for 30 days at an average electricity rate of $0.12 per kilowatt-hour would cost about $7.84 per month.
To calculate the annual cost of running a 40-watt 4ft fluorescent tube, you need to know the cost of electricity per kilowatt-hour in your area. Usually, a 40-watt fluorescent tube is on for about 8 hours per day, so you would multiply the wattage (40) by the hours/day (8) to get watt-hours per day. Convert that to kilowatt-hours and then multiply by the number of days the light is on per year. Finally, multiply that by the cost per kilowatt-hour to get the annual cost.
around 9-15$
A good type of office light which will light up your work are but not the space around you would be a desk lamp. Another good idea would be to put a low wattage fluorescent bulb in the lamp as it will provide a better light, at a much lower cost.
First of all, lamps (or any other electrical appliance, come to that) don't 'use' power.'Power' simply tells you the rate at which your lamp consumes energy. A 60- W lamp is using energy at the rate of 60 joules per second -i.e. for every second the lamp is on, it is consuming 60 joules of energy. This is because one watt is equivalent to one joule per second.To complicate matters, however, your electricity company measures the energy purchased by you, not in joules (or kilojoules or megajoules, etc.), but in a special unit called the 'kilowatt hour' -which is equivalent to 3.6 megajoules.To find out how much energy your lamp is using, in kilowatt hours, you must multiply its rating (in kilowatts) by the amount of time it is operating (in hours). So if, for example, your 60-W lamp runs for, say, four hours, then the energy consumed would be (60/1000) x 4 = 0.24 kilowatt hours. From this, you can work out the cost of running your lamp, by mulitplying the number of kilowatt hours by the amount your electricity company charges per kilowatt hour.
It cost a price
Starters for fluorescent lamps? A few 10's cents each.