Understanding that 1 kw is 1,000 watts, how long does it take for a 100 watt light bulb to consume 1 kw? In other words, if the ONLY item consuming electricity on a dwelling is a 100 watt light bulb, how long will it take for the electric meter to register 1 kw?
The electric company doesn't know. (?)
2007-07-13 10:29:21 · 7 answers · asked by acydskull 4 in Science & Mathematics ➔ Engineering
10 hours - your meter actually registers kilowatt-hours.
Watts or kilowatts are a rate of energy consumption. Watt-hours or kilowatt-hours are a measure of total energy consummed.
2007-07-13 10:33:10 · answer #1 · answered by Gary H 6 · 1⤊ 0⤋
Electric meters measure KW-Hours
It will take 10 hours for 1 100 watt bulb to consume 1000 KW-Hrs
2007-07-13 11:21:52 · answer #2 · answered by mechnginear 5 · 0⤊ 0⤋
Your electric meter registers usage in kw-hrs, not kw.
In 1 hour, a 100 watt bulb will use 0.10 kw-hr
In 10 hours your 100 watt bulb will use 1.0 kw-hr
In 1 hour 100 100 watt bulbs will use 1.0 kw-hr
2007-07-13 14:10:59 · answer #3 · answered by gatorbait 7 · 0⤊ 0⤋
Gary's right. The 100w rating simply means that at any given time your bulb is using that amount of energy to light up. That means (in the UK at 240v AC) it's using 100/240=0.42amps. The bulb isn't rated in watt/hours, which is probably why the electric company doesn't know.
Why not turn everything in the house off except the bulb by your meter and time it?
2007-07-13 11:03:39 · answer #4 · answered by Doom 2 · 0⤊ 0⤋
You are confusing 'power' with 'energy'.
Power is how fast energy is delivered.
Energy is what you pay for from the electric company, measured in kiloWatts * hours (that's what energy is: power * time).
The correct answer is not 'how long', but in this case how many bulbs will it take to use energy at that *rate*: 10 bulbs (or one 1.34 horsepower motor, or 1/4 of a 4000W electric dryer, or 3 refrigerators at 333 watts each, etc).
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2007-07-13 11:36:27 · answer #5 · answered by tlbs101 7 · 0⤊ 0⤋
You're a joke. Crime is rampant but it's concentrated in the poor neighborhoods. If you live in a nice neighborhood the chances of anything happen to you are very small. I have lived all my life in Brazil, nothing ever happened to me, not even a pickpocket. Nothing really seriously ever happened to anyone from my family or anyone that I know. I live in a 5 millions inhabitants city (Belo Horizonte). Yes, poverty is "rampant", but how does it affect you if you're not poor?
The legal system is draconian? Lol, I used to think that the US law is draconian, where you can get to jail if you drink at the age of 20. The laws here are actually too soft.
All your other comments regarding corruption, politicians, etc, are useless, because it does not affect a person's life directly.
"Illegal immigrants are pretty commonplace in Brazil but if you are found out you will end up in jail"
Lol, I did not know we have problems with immigrants here. Why would someone illegaly immigrate to Brazil? I have never heard anyone beeing arrested for beeing an "illegal immigrant" in Brazil. How many illegal immigrants are there in Brazil? 1,000? And if they catch you (what will never happen), you'll be deported, not go to a prison.
Yes, you have to carry your ID with you at all times, is it really annoying? But the police will never ask it to you "for any reason at all". I have never had my ID asked and I've never heard about it.
You're a joke. Lives in an imaginary world. And you got 2 thumbs up! Congratulations.
2007-07-13 16:20:54 · answer #6 · answered by Gustavo CL 5 · 0⤊ 1⤋
10 bulbs
2007-07-13 10:33:37 · answer #7 · answered by BlackIce Mikel 3 · 0⤊ 2⤋