The nameplate of an electric kettle is marked with "220V 1000W" 1) How much current does it work normally? How much power does it consume in 5 minutes? 2) If the power supply voltage is only 220 V, what is its actual power? What is the power consumption for 5 minutes? Wrong number. I'm sorry Yes, if the power supply voltage is only 200V..... Same as above

The nameplate of an electric kettle is marked with "220V 1000W" 1) How much current does it work normally? How much power does it consume in 5 minutes? 2) If the power supply voltage is only 220 V, what is its actual power? What is the power consumption for 5 minutes? Wrong number. I'm sorry Yes, if the power supply voltage is only 200V..... Same as above

1. The power is p, the voltage is u, and the current is I
P = UI, so I = P / u = 1000 / 220 = 4.55 a
Electric energy w = Pt = 1000 * 5 * 60 = 300000 joules
2. The voltage is 220 V, and its actual power is 1000 W
The power is also 300000 joules

The specification of an electric energy meter is 3000r / kWh. The actual 24 turns per kWh are measured. Is this within the allowable error range?

When the watt hour meter is grade 2, it can be 3000 * 2% = 60 cycles, that is, it is qualified within 60 cycles
When the watt hour meter is grade 1, it can be 3000 * 1% = 30 cycles, that is, it is qualified within 30 cycles
When the watt hour meter grade is 0.5, it can be 3000 * 0.5% = 15 cycles, that is, it is qualified within 15 cycles
When the watt hour meter grade is 0.2, it can be 3000 * 0.2% = 6 cycles, that is, it is qualified within 6 cycles

The watt hour meter is connected to the home circuit to measure ()
A. Voltage B. current C. electric work D. electric power

The watt hour meter is connected to the home circuit to measure electric power, so C

An ammeter is marked with "2000" revs (kW / h). If the turntable of the ammeter rotates for 1000 times, J of electric energy will be consumed?

First of all, please explain whether the ammeter or the watt hour meter is marked with "2000" revs (kW / h). Don't Scribble. The ammeter won't be marked like this
Your watt hour meter consumes 0.5 degree when it turns 1000, because it turns one (kW / h) in 2000, and one (kW / h) is one degree