Electricity

Electricity is the physical flow of electrons called electric current. Electricity is an energy carrier that effectively delivers energy from major energy sources to end users, and end users turn it into energy services [1].

The most common one is electromagnetic conversion, and in electromagnetic conversion electricity is generated by moving a conductor such as an electric wire in a magnetic field. The most practical example of this method is a generator connected to a turbine. The turbine provides the necessary motion to move the conductor within the generator. This kinetic energy may come from a variety of technologies such as wind turbines, hydroelectric power generation or nuclear fission, or steam generated by coal combustion.

Finally, electricity can be generated by solid transformations where electricity is generated using the structure and properties of the solid. A specially constructed solid consists of different closely packed molecules and generates current when stimulated. An example of a technique utilizing solid conversion is a solar cell.

Regardless of power generation method, it is important to note that the electricity is the same. Therefore, the electric power generated by the electromagnetic generator is the same as the electric power generated by the battery. Once electricity is generated, it is the most versatile form of energy.

The power generation speed is called watt. The amount of energy consumed over a certain period is called kWh, which is an indicator displayed on electricity rates.

Electricity is often misunderstood and ignored, but modern society depends heavily on it. Electricity is indispensable for everyday life - from lighting, heating, cooling to TV, computers, mobile phones

When electricity is generated, it must be used immediately. With existing technology, storing large amounts of electricity is not economically viable. Therefore, in order to balance power supply and demand, it is necessary to manage the grid every minute.

Depending on the power generation source, power generation may have a serious impact on the environment and health. Air pollutants generated by heat sources can cause serious harm to human health. Power generation also has a major impact on global greenhouse gas emissions. In the world, 40% of energy-related CO2 emissions are generated by electricity generation. Renewable energy sources such as the sun and the wind make the direct carbon emissions zero, but can generate electricity only intermittently or variably. Hydrocarbon resources such as coal and natural gas are carbon intensive, but are the most convenient resources to constantly generate base load power to meet consumer needs.

Power is usually generated by the generator, but it can also be powered by a battery or other power source. Usually it will be supplied to companies and households through the grid from the power industry. Electricity is usually sold at kilowatt-hour (3.6 mega joules). This is the product multiplied by the kilowatt hour in kilowatt hours of operation time. Electric utilities use electric meters to measure electricity and electric meters maintain comprehensive operation of electricity supplied to customers.

Electric energy is energy derived from potential energy or kinetic energy. When roughly used to describe the energy absorbed or possibly transmitted by a circuit (eg, a circuit provided by an utility), "electrical energy" refers to the energy converted from potential energy Point. This energy is provided by the combination of current and potential provided by the circuit. When this potential energy is converted to another energy, it is no longer potential energy. Therefore, all electrical energy is the potential energy before being supplied to the end use. When converted from potential energy, electrical energy is always called different energy (heat, light, motion, etc.).

The word "electricity" is sometimes used to mean "electricity". Just as sea water is the transmission medium for wave energy, they are not the same - electricity is the transmission medium of electricity. Items that allow current to flow are called conductors. Copper wires and other metal objects are excellent conductors that allow current to pass through them and transfer electrical energy. Plastics are poor conductors, also called insulators, which do not conduct much current and impede the transfer of electrical energy.