Electricity

thumb|upright=1.35|alt=Lighting strikes on a city at night|Electricity is invisible, but it can yield visually observable phenomena, shown here with the flash of lightning and various forms of [[electric light in the buildings.]]

physical property that quantifies an object's interaction with electric fields

opposition to the passage of an electric current

material that allows the flow of electrical current

interconnection of electrical components or a model of such an interconnection, consisting of electrical elements

Capacitance is the ability of an object to store electric charge. It is measured by the change in charge in response to a difference in electric potential, expressed as the ratio of those quantities. Commonly recognized are two closely related notions of capacitance: self capacitance and mutual capacitance. An object that can be electrically charged exhibits self capacitance, for which the electric potential is measured between the object and ground. Mutual capacitance is measured between two components, and is particularly important in the operation of the capacitor, an elementary linear elec

energy newly derived from electric potential energy

300px|thumb|upright=1.3|Electrodes used in shielded metal arc welding

physical quantity and property of material; inverse of the electric conductivity

imbalance of electric charges within or on the surface of a material

electrical circuit in which current can flow with very low or no impedance

physical quantity and property of material describing how readily a given material allows the flow of electric current

reciprocal of electrical resistance

physiological reaction or injury caused by electric current

thermally induced flow of charge carriers from a surface

redistribution of electric charge due to presence of other charges

type of contact electrification

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electrical energy at voltages high enough to inflict harm on living organisms

The volt-ampere (SI symbol: VA, sometimes V⋅A or V A) is the unit of measurement for apparent power in an electrical circuit. It is the product of the root mean square voltage (in volts) and the root mean square current (in amperes). Volt-amperes are usually used for analyzing alternating current (AC) circuits. In direct current (DC) circuits, this product is equal to the real power, measured in watts. The volt-ampere is dimensionally equivalent to the watt: in SI units, 1 V⋅A = 1 W. VA rating is most used for generators and transformers, and other power handling equip

thumb|Kolbe electrometer, precision form of gold-leaf instrument. This has a light pivoted aluminum vane hanging next to a vertical metal plate. When charged the vane is repelled by the plate and hangs at an angle.

ratio of permittivity to the electric constant

potential energy that results from conservative Coulomb forces

Electrotherapy is the use of electrical energy as a medical treatment. In medicine, the term electrotherapy can apply to a variety of treatments, including the use of electrical devices such as deep brain stimulators for neurological disease. Electrotherapy is a part of neurotherapy aimed at changing the neuronal activity. The term has also been applied specifically to the use of electric current to speed up wound healing. The use of electromagnetic stimulation or EMS is also very wide for dealing with muscular pain. Additionally, the term "electrotherapy" or "electromagnetic therapy" has also

flexible electrical power cable with a plug on one end and one or more sockets on the other end

measure of a charge carrier's net electrostatic effect in a solution and how far it persists

A branching electric discharge that sometimes appears on the surface or in the interior of insulating materials

the property that an increasing voltage results in a decreasing current

heating of a resistive electrical conductor due to current passing through it

term used throughout industries and fields that involve electricity

degree of insulation

aspect of history

low amounts of electrical volts

ratio of the amplitudes of voltage and current of a single wave propagating along the line

opposition to the passage of an electric current

Historical concept in electromagnetism

sexual practice

thumb|Death by electric chair, which was a common execution method in the early 20th century Electrocution is death or severe injury caused by electric shock from electric current passing through the body. The word is derived from "electro" and "execution", but it is also used for accidental death.

intersection of three or more electrical conductors; connection point between two or more branches

primary energy sources from which secondary energy for direct use is produced

electric charge treated as continuously distributed in space

the consumption of energy by electronic and electrical appliances while they are switched off or in standby mode

regulation of cell, tissue, and organ-level patterning and behavior as the result of endogenous electrically-mediated signaling.

remote controlled power plug/socket smart device

burn to the skin caused by electricity

scientific instrument demonstrating electric charge

methods, devices and calculations used to measure electrical quantities

electrical discharge between two electrodes separated by an insulating dielectric barrier

Circuit that makes capacitor act like a larger capacitor

Obsolete theory in physics

production of electric currents and charge separation during phase transition

specific earthing system

for power lines

magnetically coupled transformer winding polarities

book by Benjamin Franklin

Hygroelectricity is a type of static electricity that forms on water droplets and can be transferred from droplets to small dust particles. The phenomenon is common in the Earth's atmosphere but has also been observed in the steam escaping from boilers (see Armstrong effect). It was the basis for a proposal by Nikola Tesla to tap electricity from the air, an idea which has been recently revived. Hygroelectric charge is the likely source of the electric charge which, under certain conditions such as exist in thunderstorms, volcanic eruptions and some dust storms, gives rise to lightning.

in signal transmission