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If a 60 watt light bulb is used for 95 hours before it burns out what is the life of the light bulb in kilowatt hours?
Wiki User
∙ 15y ago
This is a tricky question. Similar to the question which weigh more 1 kilogram wool or 1 kilogram iron? 1 kilowatt = 1,000 watt, and 60 watt are 0.06 kilowatt. It is the same power, but expressed in two different terms. The life of the light bulb will be the same, 95 hours.
Wiki User
∙ 15y ago
Michael Wax
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How many kilowatt hours does 4 100 watt light bulb use in 24 hours?
Add up all the individual watts, convert everything to kilowatts, then multiply by the number of hours.
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When the jet takes off, the light plane has been in the air for 2 hours, and has covered (2 x 192) = 384 miles. That's the light plane's lead. The lead closes at (960-192) = 768 miles per hour. It takes (384/768) = 1/2 hour to close the gap. During that time, the light plane flies another (192/2) = 96 miles, , for a total of (384 + 96) = 480 miles. Also during that time, the jet flies (960/2) = 480 miles. The math checks. They pass. But neither pilot notices it, because the jet passes the prop-job at the speed of sound.
How many kilowatt hours KWh are used to light a 30 watt light bulb in 8?
A 30-watt bulb uses 0.03 kilowatt-hours every hour, or 30 kilowatt-hours in 1000 hours. To find the kilowatt-hours, multiply 0.03 by the time in hours.
How many kilowatt-hours does a 50 watt fluorescent light bulb use in 24 hours?
50 watts is 0.05 kilowatts, so in 24 hours it uses 0.05 x 24 kilowatt-hours, or 1.2 kilowatt-hours of energy.
How many hours of operation with a 60 watt light bulb will one kilowatt hour give you?
The idea is to divide the energy by the power used. First, convert the units to make them consistent. For example, you might convert kilowatt-hours to watt-hours.
What does kilowatt hours mean?
kWh = Power(kW) x Time (hours)AnswerA kilowatt hour (symbol kW.h) is a unit of measurement of electrical energy.
Are kilo watt hours bad for energy?
No, kilowatt-hours are an exact measure of a quantity of energy. Energy is something that can be measured exactly and if you have an electricity supply at your house there is a meter that measures the kilowatt-hours you use. If you have a 40-watt light, it uses 40 watt-hours if it is on for an hour. If it is left on for 24 hours it uses 40 x 24 watt-hours, which is 0.96 kilowatt-hours, that might cost you 10-20 cents or pence.
How many kilowats for 600 watt light for 12 hours a day?
(600 watts) x (12 hours per day) = 7.2 kilowatt-hours per day
How long does it take to burn one kilowatt?
It will last you a very long time depending on what you use it on. A light bulb will last you until it burns out. It is equal to what the ENIAC used.
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How do you compute electrical consumption of a device?
A simple electrical device is a 60 watt light bulb. The bulb is consuming 60 watts of electricity from the moment you turn it on. If you keep that light bulb on for 10 hours the power used is 60 watts x 10 hours = 600 watts of power. Electricity is sold in Kilowatt Hours. A Kilowatt is 1000 watts of power. Depending on the state you live in, it sells for 7 to 18 cents per Kilowatt Hour. So if you leave that light bulb on 10 hours per day for 30 days you will have used up 600 watts x 30 days = 18,000 watts of electricity = 18 Kilowatt Hours. At an average cost of 10 cents per Kilowatt Hour that bulb costs you $1.80 per month to leave on. The formula is watts x time x cost per Kilowatt Hour = cost of use...Answer provided by Gene Evangelist
What is the cost per week of using a 40w light bulb for 36 hours in a week?
Not enough information - I don't know what your light company charges you per kWh. Here is how you calculate this: a) Convert the week to hours. b) Convert the watts to kilowatts. c) Multiply the result of part (a) by the result of part (b), to get the total number of kilowatt-hours. d) Get the cost per kilowatt-hour. Look at a bill from your power company. If the cost per kilowatt-hour is not stated explicitly, you can divide the total amount of dollars (or whatever) by the kilowatt-hours billed, to get the cost, in dollars per kilowatt-hour. e) Multiply the result of part (c) by the result of part (d).
A 100 watt light bulb left on for 24hrs how many kilowatts does it draw in a thirty day period?
1 kilowatt is equal to 1,000 watts, so a 100 watt bulb uses .1 kilowatt. Technically, your home or business meter base measures kilowatt hours, meaning that it measures both the kilowatts and the amount of time. If you turn on 10 100 watt bulbs for 1 second, that would be a kilowatt, but the amount of power use would be insignificant. So... To calculate the kilowatt hours: .1 kilowatts (from above, knowing the energy use of the bulb) Multiplied by 24 hours in a day Multiplied by 30 days... .1(kilowatts) * 24(hours)* 30(hours in a day) = 72 kilowatt hours
Running cost of a 15 watt light bulb over 24 hours?
15 w * 24 h = 360 watt-hours. [conversion: 360 (w-h) /1000 (w/kw)= .36 kilowatt-hours] So, .36 times your local electricity supply and delivery rate (in kilowatt-hours). For me, supply and delivery of 1 kilowatt-hour is $3.25 (you can find this on your bill) So, .36 * 3.25= $1.17 to run 15 watt light for 24 hours
