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.Continue Reading
Wikipedia enumerates the many uses of electricity in both human technology and the natural world. Electricity provides heat and private and public lighting. Electricity is vital to many appliances, like televisions, radios, computers, refrigerators and washing machines. Even automobiles use electricity and have a battery for this purpose. In nature, animals use voltage pulses to transmit information along their cell membranes. Additionally, electricity can be used to revive someone. When a person's heart stops beating, physicians often stimulate it with a device known as a defibrillator, which sends an electrical pulse.
Energy Quest of California states that the flow of electric charge occurs when atoms lose and gain electrons, the charged particles that surround the nucleus.
According to energy provider Pacific Power, electricity travels through the path of least resistance. Materials that allow the free flow of electricity are called conductors. Common insulators are metal, water and moist objects like plants and people. Insulators are materials that do not conduct electricity; they include rubber, plastic and glass.Learn more about Electricity
An electric field exerts a force on anything that has an electric charge. The force produced by an electric field is one of the action-at-a-distance forces. It is a non-contact force that does not require the objects that it affects to be in physical contact with one another.Full Answer >
A conductivity meter works by emitting an electric charge through a probe that is placed in a solution. Any increase or decrease in dissolving ions results in an increase or decrease in the electrical charge of the solution, which the meter reads.Full Answer >
Electricity is defined as a type of energy that involves the flow of electrons, according to the Merriam-Webster dictionary. Electricity occurs when an atom gains or loses an electron.Full Answer >
A switch works by interrupting current flow around an electrical circuit. A basic switch is a binary device: it is either open (off) or closed (on). The simplest type of switch is one that comprises two metal strips that are brought into contact by a spring or some other form of actuating mechanism.Full Answer >