![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
The dial of a household electric energy meter is marked with the word "3000r / kW · H". If an electric water heater is used alone, the dial turns 210 revolutions in 300s, The energy consumed by the water heater, And how much heat the water heater can give off to make the water temperature reach 10 ℃
It should be the power of the electric water heater
First calculate the electric energy consumed by the water heater w = 210r / (3000r / kWh) = 0.07kwh = 252000j
Then calculate the power of the water heater P = w / T = 252000j / 300s = 840w
In daily life, the electric energy consumed by electrical appliances in a certain period of time can be measured by an electric energy meter. The dial of an electric energy meter is marked with "3000r / kW, H"
1. If the aluminum plate of this watt hour meter turns 1500r, how much electricity is consumed by the connected appliances?
2. If the green disk turns 4500r, how much power is consumed by the connected appliances?
If the aluminum plate of the meter turns 1500r, the connected electric appliance consumes 0.5KW. H electric energy
If the green disk turns 4500r, the connected electrical appliances consume 1.5KW. H electric energy
A classmate's home is using an electric appliance. The turntable of the electric energy meter has turned 15R (3000r / kWh) in 3min to calculate the power of the electric appliance?
W=15r/(3000r/kwh)=1/200kwh
t=3min=1/20h
Electric power of electric appliance P = w / T = (1 / 200kwh) / (1 / 20h) = 0.1kw = 100W
The dial of an electric energy meter is marked with the word "3000r / kWh", which means that for every 1 kwh of electric energy consumed, the rotary table of electric energy turns 3000 circles. If only one bulb is connected in the room, and the rotary table turns 15R within 3 minutes, how many kWh and J are the electric energy consumed by the bulb during this period?
Power consumption: 15R / 3000r / kWh = 0.005kwh
1kwh=3600J
Heat: 0.005kwh * 3600j = 18J
RELATED INFORMATIONS
- 1. The watt hour meter is marked with "3000r / kWh". If only one consumer works in the circuit of the meter, the dial of the watt hour meter will turn 30R in 6 minutes Then, the electric energy consumed by the appliance is ［ J, and the current passing through it is ］ a
- 2. On the calculation of watt hour meter revolution and power consumption
- 3. How to calculate the consumed electric energy according to the revolutions and time of the electric energy meter?
- 4. What does single phase meter 20 (80) a mean? Three phase meter 30 (100) a? They read 30 times 100A
- 5. Three companies share a total electricity meter, and they pay 123.50 yuan in October. How much should each company pay? Li family: number of ammeters 62 Wang family: number of ammeters 58 Liu family: number of ammeters 70
- 6. Xiao Ming helps his parents to budget the electricity bill in November. The following table shows the readings of the electricity meter every morning for 8 consecutive days in early November: 1,21,2,24,3,28,4,33,5,39,6,42,7,46,8,49. If the electricity bill per kilowatt hour is 0.53 yuan, what is the estimated electricity bill of Xiao Ming's family in November (30 days)?
- 7. 1.5 (6) a meter, 1 degree of electricity is equal to 15 degrees, the meter can withstand the maximum power
- 8. How long does it take for a 220 V / 50 Hz 20 W bulb to use one degree of electricity? I rent a house. I don't live for a long time. I can only use the 220 V / 50 Hz 20 W light bulb. How often do I use it
- 9. How many watts is AC 220 V 50 Hz? I want to see how many watts of power supply, but it only says AC 220 V 50 Hz. How many watts of power supply is this? It is pasted with yellow paper, and then nothing is written! My configuration is e2140 p5gc MX plus 8500gt maverick 160g 1G memory. I think it should be 350W or 330W?
- 10. The dial of electronic watt hour meter is marked with the words "3200imp / kW · H" (IMP / kW · H "is an important parameter of electronic watt hour meter -" pulse output "unit, and its value represents the number of times that the power consumption indicator on the dial of 1kW · h consumes electricity). When an electrical appliance is connected to the meter alone and works for 20min, the indicator of the watt hour meter flashes 320 times, and the energy consumption of the electrical appliance in the above time The electric energy is______ KW · h, the electric power of the electric appliance is______ W. The maximum power of the electronic watt hour meter is______ W．
- 11. 2. The surface of an electric energy meter is marked with 3000r / kWh. If there are several 100W electric lamps in this circuit, observe the turntable and measure that the turntable has turned 50 revolutions in 5 minutes. If the switch is not opened or closed during this period, it will turn 50 revolutions in this period______ Two lights are used at the same time Is there an analysis process
- 12. A watt hour meter is marked with 3000 R / kW · h. now it is observed that the watt hour meter rotates 45 times in 10 min. how much work does the current do?
- 13. A household electric energy meter has 3000r / kWh on it. If the meter is used to measure the power of the terminal electric appliance, the turntable turns 15 times in 3 minutes The work done by the current_____ Kilowatt hour=_____ Coke, what's the power of this consumer____ tile
- 14. The electricity meter of a classmate's home is marked with 220V, 10a and 3000r/ The electric energy meter is marked with "220V 10A" and "3000r / kWh", which indicates that the electric energy meter can be connected to the electric appliances with a total power of () W at most. One day, all the electric appliances in the student's home (with a total power of 600W) work for 4h, then the dial of the electric energy meter will rotate ()? The second question needs process. The first question is I will, train of thought or process,
- 15. What does 10 (20) a mean on an energy meter?
- 16. The meaning of 3 × 10 (40) a meter 1、 What do you mean by "3", "10" and "40" in the 3 × 10 (40) a meter? 2、 On the premise of safety, what is the maximum allowable power?
- 17. What do the numbers in 3 * 4 * 1.5 (6) mean?
- 18. What will happen if a small light bulb (2.5V 0.3A) and a household incandescent lamp (220V 40W) are connected in series to a 220V power supply? There are four options. What do you choose? A small light bulb and incandescent light bulb are on B small bulbs and incandescent lamps are burned out C small bulb short circuit, incandescent lamp normal light D small bulb burned out, incandescent lamp in good condition, but does not emit light Please talk about your ideas
- 19. There is a "220v40w" light bulb A. how many can a "220v5a" electric energy meter connect to this kind of light?
- 20. If the dial of the electric energy meter is marked with the words of 220V and 5A, the total power of the electric appliance that the electric energy meter can connect cannot exceed () kW