How much energy does a light bulb use hourly?

Question

If I turn on a lamp with a 60 watt light bulb in it, does it use 60 kwh for each hour it is left on? Or how does the figuring of actual electricity use work?

Answer 1

a 60 watt light bulb uses 60 watts per hour, or 60 watt-hours. You'd need 1000 of them running for one hour to attain 60 kWh.

Answer 2

As the others have already said do not confuse watts(Watts per hour) with kWh (kilowatts per hour). A sixty watt bulb will use 60 watts for every hour that it is left on. One kilowatt is equal to one thousand watts. Divide 1000 by 60 to find how many hours the light must be left on to equal one kWh. That would be approximately 16.67 hours.
If the cost of electricity were 10 cents a kWh, Then you would have to leave the light on for 16.67 hours to consume 10 cents worth of power.

Answer 3

60 watts is 60 watt hours, not kwh. so the cost at lets say 10 cents a kwh would be (60/1000)x .10 = .006 or .6 cents.

Answer 4

It uses .06 kwh for each hour it is on. For appliances that are on continuously, you add up their wattages. Say a TV @ 200 W, two lightbulbs @ 100 W each. Thats 400 W or .4 kwh if on for an hour for all of these together.

Answer 5

a 60 watt bulb uses 60watts per hour ,not 60 kWh(1kilowatt hour= 1,000watts)

Answer 6

60 wh per hour. It will take 1000 hours to hit 60 kwh.

Answer 7

This first answer is partly wrong. I doesnt use 60 watts of energy, 60 watts means that is uses 60 joules of energy per second.

so per minute it uses 3600 joules of energy, and per hour 21600 joules.

Answer 8

A lot

Answer 9

not much

Answer 10

good question!