2007-01-06 08:44:24 · 9 answers · asked by The enforcer 1 in Science & Mathematics ➔ Physics
All light bulbs have a wattage rating which basically tells you how quickly they use electrical energy. You multiply this by the time your light bulb is on to find out how much energy is actually used. Most electric companies use the unit kWh (kilowatt-hours) to measure energy consumption.
If you have a 60 W bulb that is on for 10 hrs. you use 600 Wh or 0.6 kWh or electrical energy. This amount of energy would cost just a few pennies in most parts of the country.
2007-01-06 09:00:46 · answer #1 · answered by msi_cord 7 · 1⤊ 0⤋
The electricity used in electrical appliances is measured in watts. Electricity supply companies charge the consumer by the Kilo-watt/hour (kw/h) if an appliance uses 1000watts(1 kilowatt) per hour they charge accordingly. If the supply company charge 10p per kilowatt/hour, then a 2kw appliance running for 1hour will cost 20p.
2007-01-07 06:49:13 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The appliance has a wattage rating. Multiply this by the time that the appliance is "on". Watt hours are a unit of energy
2007-01-06 17:36:26 · answer #3 · answered by walter_b_marvin 5 · 0⤊ 0⤋
Determine its power consumption in watts (easy for a light bulb, the wattage is marked on it), and multiply that by the amount of time that it is used. A 100 watt light bulb run for ten hours consumes one kilowatt hour ((1000 watt hours), which in the US today is worth perhaps twelve cents.
2007-01-06 08:48:29 · answer #4 · answered by Anonymous · 2⤊ 0⤋
examine your close by television itemizing - fantasy busters had a phase on that approximately 2 weeks in the past - that they had something which you may use in between that wall socket and the object that assist you to understand the way plenty electric powered that's applying
2016-12-12 05:32:26 · answer #5 · answered by ? 4 · 0⤊ 0⤋
You need an instrument to measure the current (clamp AC amps meter).
You should know the voltage (110vac?).
Then apply the formulas to find the power consumed.
2007-01-06 08:50:49 · answer #6 · answered by PragmaticAlien 5 · 0⤊ 1⤋
it should give you the wattage and such on the bulb.
2007-01-06 08:47:15 · answer #7 · answered by snakegrit 1 · 0⤊ 0⤋
Ask the dustbin man
2007-01-06 08:48:32 · answer #8 · answered by cpvk9 2 · 0⤊ 2⤋
you can get all that info from a elec board
2007-01-06 08:47:17 · answer #9 · answered by Anonymous · 0⤊ 2⤋