# electric circuit

electric circuit
circuit (def. 9a).
[1760-70]

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path for transmitting electric current. An electric circuit includes a device that gives energy to the charged particles constituting the current, such as a battery or a generator; devices that use current, such as lamps, electric motors, or electronic computers; and the connecting wires or transmission lines. Two of the basic laws that mathematically describe the performance of electric circuits are Ohm's law and Kirchhoff's circuit rules.

Electric circuits are classified in several ways. A direct-current (direct current) circuit carries current that flows only in one direction. An alternating-current (alternating current) circuit carries current that pulsates back and forth many times each second, as in most household circuits. A series circuit comprises a path along which the whole current flows through each component. A parallel circuit comprises branches so that the current divides and only part of it flows through any branch. The voltage, or potential difference, across each branch of a parallel circuit is the same, but the currents may vary. In a home electrical circuit, for instance, the same voltage is applied across each light or appliance, but each of these loads draws a different amount of current, according to its power requirements. A number of similar batteries connected in parallel (see illustration, bottom) provides greater current than a single battery, but the voltage is the same as for a single battery. See also integrated circuit; tuned circuit.

The network of transistors, transformers, capacitors, connecting wires, and other electronic components within a single device such as a radio is also an electric circuit. Such complex circuits may be made up of one or more branches in combinations of series and series-parallel arrangements.

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Universalium. 2010.

### Look at other dictionaries:

• electric circuit — elektros grandinė statusas T sritis automatika atitikmenys: angl. electric circuit vok. elektrischer Kreis, m; elektrischer Stromkreis, m rus. электрическая цепь, f pranc. circuit électrique, m …   Automatikos terminų žodynas

• electric circuit — elektrinis kontūras statusas T sritis fizika atitikmenys: angl. electric circuit vok. elektrischer Kreis, m rus. электрический контур, m pranc. circuit électrique, m …   Fizikos terminų žodynas

• electric circuit — elektrinė grandinė statusas T sritis fizika atitikmenys: angl. electric circuit vok. elektrische Schaltung, f; elektrisches Netzwerk, n; elektrisches Schaltbild, n rus. электрическая цепь, f pranc. circuit électrique, m …   Fizikos terminų žodynas

• electric circuit — elektrinė schema statusas T sritis chemija apibrėžtis Sąlyginiais ženklais aiškinama grandinės elementų jungimo tvarka. atitikmenys: angl. circuitry; electric circuit rus. электрическая схема …   Chemijos terminų aiškinamasis žodynas

• electric circuit node — elektros grandinės mazgas statusas T sritis automatika atitikmenys: angl. electric circuit node; node of an electric circuit vok. Stromkreisknotenpunkt, m rus. узел электрической цепи, m pranc. nœud d un circuit électrique, m …   Automatikos terminų žodynas

• electric circuit node — elektrinės grandinės mazgas statusas T sritis radioelektronika atitikmenys: angl. electric circuit node vok. Stromkreisknotenpunkt, m rus. узел электрической цепи, m pranc. noeud d un circuit électrique, m …   Radioelektronikos terminų žodynas

• electric circuit — noun an electrical device that provides a path for electrical current to flow (Freq. 1) • Syn: ↑circuit, ↑electrical circuit • Hypernyms: ↑electrical device • Hyponyms: ↑bridge, ↑ …   Useful english dictionary

• electric circuit — noun A path, or an interconnected group of paths (at least one of which is closed), capable of carrying an electric current …   Wiktionary

• electric circuit — path or line of an electric current …   English contemporary dictionary

• Electric Circuit —   The path followed by electrons from a generation source, through an electrical system, and returning to the source.   ***   Path followed by electrons from a power source (generator or battery) through an external line (including devices that… …   Energy terms