A static electrical discharge between two clouds or between a cloud and the earth accompanied by a flash of light.

An electric current that reverses directions at regular intervals (typically 60 times a second); abbreviated "AC." This current found in homes.

The measurement of the flow of an electric current through a conductor.

A single electric cell, or group of connected cells, that produces a direct electric current.

The total loss of electric power supplied by the electric company.

A temporary reduction of voltage supplied by the electric company. Typically causes lights to dim.

A container filled with a chemical substance consisting of electrodes and electrolytes that produce an electric current by chemical action.

Electricity produced by a surplus (position) or shortage (negative) of electrons in an object.

A complete or partial path followed by a flow of electric current.

A substance or material that allows electrons, or electrical current, to flow through it.