Introduction To Electric — Circuits

: A device that consumes electrical energy and converts it into another form, such as a light bulb (light), a motor (motion), or a heater (heat).

Every functional circuit requires at least three basic elements, though practical setups often include more: Introduction to Electric Circuits

An electric circuit is an unbroken, closed loop of conductive material that allows electric charges (electrons) to flow continuously from a power source, through various devices, and back again. Essential Components of a Circuit : A device that consumes electrical energy and

: Conductive materials, usually copper wires, that provide the physical path for electricity to travel. : Provides the electrical "pressure" (voltage) to move

: Provides the electrical "pressure" (voltage) to move charges. Examples include batteries (DC) and wall outlets (AC).

: A device used to open or close the circuit path. An "open" circuit has a break that stops current flow; a "closed" circuit is a complete loop.