I got my electric bill and it is close to $200 for an apartment. The reason being my ML is never here but she keeps the lights in her room on all night long for a bird. She says because she isn't here (at night) she doesn't use any elec. So I am trying to figure out exactly how much she uses so we can charge her for it. Its a 60 watt bulb runs on average 20hrs/day plus on top of that she runs a fan and her tv(again all night). I've tried to turn them off when she isn't here and she says well I pay the bill I have the right to use as much as i want. Well when bills over run her budget my husband and I have to make up for it which takes away from our twin infants. We had over 2000 saved up and I checked the account today we have 250 from having to cover her so much. I just want to be able to shove this in her face and make her accountable.
2007-07-09 07:50:52 · 8 answers · asked by mom_of_twins28 1 in Science & Mathematics ➔ Mathematics
You've given quite a lot of unnecessary details here, many of them none of my business.
Watt (W) is a unit of power, while kWh is a unit of energy.
If the light consumes energy at the rate of 60 W, and is on for 20 hours/day, then total energy consumpion =
60*20 = 1200 Wh / day = 1.2 kWh/day
or 1.2*30 = 36 kWh / month
Multiply this by the cost per kWh to get the monthly cost of leaving the light on.
I can't say anything about hte TV and fan, since you didn't give any info on that.
Try giving her a fluorescent light.
2007-07-09 07:56:30 · answer #1 · answered by Dr D 7 · 1⤊ 0⤋
What you really want to show her is how much of the kWH that the utility quotes you is due to her flaggrant use of power. So look at the manufacturers label on her tv and fan - they should tell you how many watts each appliance uses. You already know how many watts her lamp uses. Then make up a budget for her: For example:
1 60 Watt bulb running for 10 hours/day *$0.10/kWH = $0.06/day
1 TV @ 120W for 10 hours/day *$0.10/kWH = $0.12/day
1 fans @ 50 W for 10 hours/day * $0.10/kWH = $0.05/day
Total = $0.23/day
Monthly (30 days) = $6.90
You need to find out what your electric company charges/ kWH. I used 10 cents but that varies greatly depending on where you live. To convert watts to kilowatts (kW) divide watts by 1000.
Hope this helps. Good luck.
2007-07-09 08:04:13 · answer #2 · answered by nyphdinmd 7 · 1⤊ 0⤋
kwh is the product of watts and hours divided by 1000.
You need to multiply the watts for each appliance by the time in hours that it was used, and add these products together. That gives you the total watt-hours. Dividing by 1000 gives the number of kilowatt-hours for which you should charge.
2007-07-09 07:56:03 · answer #3 · answered by Anonymous · 1⤊ 0⤋
watt is a unit of powerlike that of lampor fan. Kilowatt hour kwh is unit of energycosumed for which we pay.I f we use an appliance of power 1000watt(1kiolowatt) for one hour , we consume 1kwh of energy.. I hope you can make the caculations and get at your result.
2007-07-09 08:00:52 · answer #4 · answered by Anonymous · 0⤊ 0⤋
moreover, a kilowatt hour is one kilowatt per hour, so 60 watts times 20 hours is 1.2 kilowatt hours. At ten cents per kwh, she owes you 12 cents.
Per day.
2007-07-09 07:58:11 · answer #5 · answered by Remo_Williams 2 · 0⤊ 0⤋
One thing you must keep in mind is that a kilowatt hour is a unit of ENERGY. Not power.
I think it would be ideal to calculate kWh, and multiply it by the cost.
P = W/t
W = Pt
= (60 W)(20h)
= 1200J
2007-07-09 07:55:46 · answer #6 · answered by de4th 4 · 0⤊ 2⤋
60 * 20 * 30 = 36,000 w or 36 kw because 1 kw = 1,000 w.
2007-07-13 05:38:00 · answer #7 · answered by Jun Agruda 7 · 2⤊ 0⤋
a kilowatt is one thousand watts.
joe
2007-07-09 07:54:33 · answer #8 · answered by Joe P 2 · 0⤊ 0⤋