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In home circuits______ The meter is used to measure the electric energy consumed by users. The electric kettle marked with "220V & nbsp; & nbsp; 2000W" normally works for 3 minutes and consumes electric energy______ Kilowatt hour
In the home circuit, the electric energy meter is used to measure the electric energy consumed by the user; according to the nameplate, the rated power of electric kettle is p = 2000W = 2kW, the normal working time is t = 3min = 120h, the electric energy consumed is w = Pt = 2KW × 120h = 0.1kw · h; therefore, the answer is: electric energy; 0.1
The electric kettle marked with "220V 2000W" works normally for 6 minutes and consumes electric energy_______ Degree
W = Pt = 2kW * 0.1h = 0.2kwh = 0.2 degree
How much electricity does a 2000 Watt electric kettle need to boil 6L water
How many kilowatts of electricity is needed to boil 6L water in a 2000 Watt electric kettle? What's the calculation formula,
Q = MC △ t m is the mass of water, C is the specific heat capacity of water, t is the temperature change, calculated according to room temperature 20, t = 100-20 = 806l, water is 6kg, specific heat capacity of water is 4200, back to the formula q = 6 * 4200 * 80 = 2016000j, primary electricity is 1kwh = 1000 * 3600 = 3600000j, do not calculate other losses 2016000 / 3600000 = 0.56 general hot water
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