2006-06-13 09:25:33 · 15 answers · asked by russ23 1 in Science & Mathematics ➔ Physics
A kilowatt-hour (kWh) is a measure of Energy.
Power is the measure of Energy per unit time.
The unit of power is the Watt.
1 kiloWatt = 1000 Watts.
1 kW of power used for 1 hour = 1 kWh.
1 kWh = 3,600,000 Joules.
2006-06-13 09:36:13 · answer #1 · answered by mrjeffy321 7 · 0⤊ 0⤋
A kilowatt-hour is a measure of energy use within a system.
A kilowatt is a unit of one thousand watts. A watt is a unit that describes a measurement of a quantity of work (measured in Joules) performed in a given time (measured in seconds.) A Joule is a unit that describes a force (measured in Newtons) moving an object over a distance (measured in meters.) A Newton is a unit of force required to accelerate a one kilogram mass at 1 meters per second each second. Thus a kilowatt is a measurement of 1000 J/s or 1000 N*M/s or 1000kg*m^2/(s^3).
A kilowatt-hour would equal 3,600,000 J/s and so on.
2006-06-13 09:39:05 · answer #2 · answered by C.W. 2 · 0⤊ 0⤋
A kilowatt hour is a measurement of energy equal to 3.6 Megajoules.
A watt is a measurement of the rate of energy transfer, also known as power. Power equals energy divided by time.
1 watt = 1 joule/second
1 kilowatt = 1000 watts = 1000 joules/second
1 hour = 3600 seconds
1 kilowatt hour = 1000 joules/second X 3600 seconds
1 kilowatt hour = 3,600,000 joules = 3.6 Megajoules (mega = million)
2006-06-13 09:39:50 · answer #3 · answered by dogsaysmoo 3 · 0⤊ 0⤋
The kilowatt hour is a electrical power per time unit with an average of 1000 in phase volt amps sustained for a period of one hour.
2016-03-27 02:48:37 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Energy. Power is Energy/Unit time. If you multiply Power by a unit of time you get a quanity of energy.
A kilowatt-hour is the energy used to supply 1000Watts of power over a 1 hour period.
2006-06-13 09:35:49 · answer #5 · answered by Anonymous · 0⤊ 0⤋
I kilowatt hour is a measurement of joules. It takes 3.6 million joules to light one 100 w lightbulb for 10 hours.
2006-06-13 09:31:55 · answer #6 · answered by andy pandy 1 · 0⤊ 0⤋
Electricity
2006-06-13 09:29:32 · answer #7 · answered by cactusdean6 1 · 0⤊ 0⤋
kilo means 1,000 a watt is voltage multiplied by current, kilowatt hour is 1,000 watts per hour usage of electricity. It is the sum of the total power used.
2006-06-13 09:29:41 · answer #8 · answered by Michael F 5 · 0⤊ 0⤋
Consumption of Electrical Energy over Time.
Kilo..THOUSAND..
WATT..Unit of Energy
Hour Unit of time 60 minutes..
2006-06-13 09:30:51 · answer #9 · answered by Stan B 4 · 0⤊ 0⤋
Energy.
1 kw hour is 3.6 mega Joules.
2006-06-13 09:32:39 · answer #10 · answered by Epidavros 4 · 0⤊ 0⤋