An electric arc, or arc discharge, is an electrical breakdown of a gas that produces a prolonged electrical discharge.

Admittance is a measure of how easily a circuit or device will allow a current to flow.

The interconnected lines which facilitate the bulk movement of high voltage electricity are known as a transmission network.

Electrical injury is a physiological reaction caused by electric current passing through the body. The injury depends on the density of the current, tissue resistance and duration of contact.

The bulk movement of electricity from one site to another.

The degree to which voltage, frequency and waveform comply with established standards.

The electric power industry covers the generation, transmission, distribution and sale of electric power to the general public and industry.

Electric power distribution is the final stage in the delivery of electric power; it carries electricity from the transmission system to individual consumers.

An electrical or electro-mechanical device for converting electrical energy. A power converter can convert alternating current into direct current and vice versa; change the voltage or frequency of the current or do some combination of these.

The rate, per unit time, at which electrical energy is transferred by an electric circuit.

A potential energy (measured in joules) that results from conservative Coulomb forces and is associated with the configuration of a particular set of point charges within a defined system.

A pumped storage hydroelectric power plant in Wales, UK.

An electrically powered motor used to convert electrical power into mechanical power as used in electrically driven pumps.

In electrical engineering, electric machine is a general term for machines using electromagnetic forces, such as electric motors, electric generators, and others.

Electric heating is a process in which electrical energy is converted to heat energy.

Electric grid security refers to the activities that utilities, regulators, and other stakeholders play in securing the national electricity grid.

An electric field is the physical field that surrounds each electric charge and exerts force on all other charges in the field, either attracting or repelling them.

A stream of charged particles, such as electrons or ions, moving through an electrical conductor or space, measured in Amperes.

Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.

A battery is a device consisting of one or more electrochemical cells with external connections for powering electrical devices such as flashlights, mobile phones, and electric cars