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What is meant by the statement that an electric kettle has a power of 2 kw?
Wiki User
∙ 10y ago
kW (kilowatt) is a unit of power. It refers to how quickly (at what rate) energy is transferred or converted - in this case, probably it refers to how quickly electrical energy is converted to heat. 1 watt = 1 joule / second. 1 kW = 1 kJ (or 1000 joule) / second.
Wiki User
∙ 10y ago
Wiki User
∙ 14y ago2 kilowatts = 2000 watts
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What is the useful and wasted energy in an electric heater a television an electric kettle headphones Thanks for your help?
The use ful energy from headphones would be sound , the wasteful would be battery power.
What are the Power ratings of a kettle?
25kw
Why does more energy go into something than come out?
There are always losses in using energy. Some examples: 1. A car engine uses only 30-40 percent of the energy in the gasoline, the rest is rejected in the radiator and the exhaust 2. An electric motor is better at using most of the electric power supplied, but still loses some energy in heating of the motor windings and in friction of the bearings 3. Boiling an electric kettle-you might think that all the electric power is used to heat the water, but some must be lost from the outside of the kettle to the surrounding air. Generally machines always lose some heat which is not usefully used, by thermal losses to the environment or by internal friction .
What is the input energy of an electric drill?
Some use AC electric power from a wall outlet. Some use DC electric power from a rechargeable battery (but this was originally charged using AC electric power from a wall outlet).
How do electric companies calculate electric energy used?
power multiplied by time
What happen to the heating element if lower power supplied to an electric kettle via transformer?
it won't get as hot
What is the useful and wasted energy in an electric heater a television an electric kettle headphones Thanks for your help?
The use ful energy from headphones would be sound , the wasteful would be battery power.
Why does a kettle have 800 watts?
Assuming you got that number off an electric kettle it is because that is how much power is needed to heat the water. The number of watts actually measure how much energy the kettle is designed to use. Water is very hard to heat compared to other liquids(or to cool). So it takes a lot of watts to get the kettle to heat the water.
Where can one find cheap electric power utilities?
Electric utilities are not meant to buy. they are companies that generate and transmit power. But if one is looking for cheap electric devices, they could visit online shops such as All Electronics and Amazon.
What is the flex of a kettle?
a power cord
What are the Power ratings of a kettle?
25kw
Why cant you use batteries to power kettles?
Standard electric kettle normally takes about 1600-3000 watts to operate. No modern batteries can supply this kind of power for the needed period of time (about 3-5 minutes).
What has the author David B Ives written?
David B. Ives has written: 'Final environmental impact statement for Columbia Generating Station of the Wisconsin Power and Light Company' -- subject(s): Electric power-plants, Environmental aspects of Electric power-plants
Electric power can be transmitted from one place to another without the need for connecting wires in between This statement is true or false?
True
What is bought from an electric company?
Electric power
Why does more energy go into something than come out?
There are always losses in using energy. Some examples: 1. A car engine uses only 30-40 percent of the energy in the gasoline, the rest is rejected in the radiator and the exhaust 2. An electric motor is better at using most of the electric power supplied, but still loses some energy in heating of the motor windings and in friction of the bearings 3. Boiling an electric kettle-you might think that all the electric power is used to heat the water, but some must be lost from the outside of the kettle to the surrounding air. Generally machines always lose some heat which is not usefully used, by thermal losses to the environment or by internal friction .
Does a kettle use more power if its half full?
yes
