Windmills produce electricity by electromagnetic induction, the process in which the movement of magnets in a magnetic field generates electricity. In a windmill, when wind moves the blades of the windmill that move the rotor, the rotor rotates a shaft that holds magnets in the magnetic field of the generator, generating alternating current that is sent along power lines.Know More
The Department of Energy holds that wind turbines provide an alternative and clean energy source to fossil fuels. Wind energy is abundant, renewable and one of the least expensive energy technologies. It can revitalize rural communities because wind farms are built in the country where wind is unhindered, and farmers can still plant crops on the land because the turbines do not take up much space. Windustry claims that wind energy can produce up to one-fifth of the nation's energy. The Wind Energy Foundation has stated that in 2013, Colorado generated almost 14 percent of its electricity using its 1,530 wind turbines with a total capacity of 2,332 megawatts.
According to How Stuff Works, people have been using wind energy since 3,000 B.C. in sailboats. One thousand years later, windmills came into being for grinding grain. The windmill was first used to produce electricity in the 1930s.Learn more about Electricity
Transformers have two sets of wires wound around an iron core, and they use electromagnetic induction to increase or decrease electrical current. The primary wires magnetize the iron after the application of current, and the secondary wires use the magnetic induction to create an output current. The increase or decrease of output current depends on how many times the input and output wires wind around the core.Full Answer >
According to the Occupational Safety & Health Administration, electricity is dangerous because it can cause burns, nerve damage, cardiac arrest and death. Alliant Engery also notes that the majority of the human body is composed of water, which makes it a good conductor of electricity.Full Answer >
The abbreviation "mA" denotes the International System unit for electrical current known as the milliampere. One milliampere is equal to one-thousandth of an ampere. The unit is named for the 18th and 19th century French physicist Andre-Marie Ampere, who studied electromagnetism.Full Answer >
Electricity, the flow of electric charge, powers much of the technology used in modern society. The Energy Information Administration explains that electricity is a secondary source of energy, meaning that it comes from the conversion of other energy sources.Full Answer >