the new:they use energy to turn ONE gear that turn the rest, thus using less energy by only turning ONE the] the old:they use energy to turn the whole thing, thus using more energy
Only running cost is the cost of electricity consumed to charge the battery through a charger. How many units of electricity is consumed will depend on the capacity of battery, efficiency of the charger (and so losses of energy in the charger in form of heat and radiation). You can estimate the power consumed by the voltage and wattage rating of the charger and how long it takes to charge the phone battery fully. - Neeraj Sharma
Need to know the voltage of the industrial application in question. Check your HP, that seems like quite a bit!See the answer to the Related Question shown below to get the formula to convert horsepower to KVA.
That doesn't require any special device - it is part of the natural interaction between electricity and magnetism. However, devices that make practical use of this include electric motors, and generators.
This is a very important question, because it would help to answer the other question "Should people be more concerned with the electricity they use/waste in their household, or with the (probably) far great electricity used/wasted by businesses and industry?". As a related example, consider a person who goes to great lengths to save water at home but then haplessly consumes a pound of beef over, say, a week. The water consumed to make a pound of beef is between 1500 and 2500 gallons! A similar imbalance in focus surely exists regarding electricity. So many homes go pitch black during the night to avoid leaving that last 60 watt bulb in the hallway on. But how many people stop to consider the stores such as Walmart, other businesses, and industrial buildings that simply leave their lights on full bore during the night... just to minimize thefts? The real question is of the electricity used in America, what percent is used by households, companies, public services (e.g. street lights), and industry? I wouldn't be surprised if households use 10% and industries used 70%. If indeed that were the case, then the feverish and myopic focus most people have on individual household savings would actually just be distracting us from where we could really save electricity. The U.S. Energy Information Agency reports that the industrial sector consumes approximately one-third of the total energy consumed annually. The largest users of energy in the industrial sector are the bulk chemical, refining, paper, mining, and construction industries. Those five industries together account for more than 61 percent of total industrial delivered energy consumption. Although the largest current user of energy is the bulk chemicals industry, the refining industry, which includes energy use at petroleum, biofuel, and coal-to-liquids (CTL) facilities, is projected to become the largest energy-consuming industry starting in 2027. [source: http://www.eia.gov/forecasts/aeo/early_consumption.cfm]
Over 661 million tons of rice husks are consumed in the world of construction.
Residual electrical use.
Phantom electricity from household appliances account for 8% to 10% of total energy consumed by the average household. Ranging from the computer left in stand-by mode and home gaming consoles to microwaves and cell phone chargers left in electrical outlets, phantom power wastes electricity even while the household sleeps with little to no benefit. Just by unplugging electronic devices not in use or by using power bars that totally disconnect electricity flow by a simple off switch, households can save up to $100 a year.
Poducts that aren't consumed or quickly disposed of, and can be used for several years. Examples include cars, TVs, and household appliances.
No electricity is consumed at a abattoir.
Physics is the study of the nature and properties of matter and energy. At home, it is applied in how much energy is consumed by the appliances, how much heat is applied when cooking and the work done in household chores.
maths is used to calculate the units of electricity consumed by the user....
That ratio is called "Efficiency".
About 1000.
12
it refers to the electric power consumed by electrical or electronic appliances when they are in stand by mode. eg:-tv, computer,laptop.
One KwH = Kwxhr going by the basics, the question should be understood as the average units consumed per household. An average household may consume about 3000 units in a year.
You can buy a volt meter, which can calculate how much electricity is passing through the wires.