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Path that transmits electric current. A circuit includes a battery or a generator that gives energy to the charged particles; devices that use current, such as lamps, motors, or electronic computers; and connecting wires or transmission lines. Circuits can be classified according to the type of current they carry (seealternating current, direct current) or according to whether the current remains whole (series) or divides to flow through several branches simultaneously (parallel). Two basic laws that describe the performance of electric circuits are Ohm's law and Kirchhoff's circuit rules. See alsotuned circuit.
Variants of CIRCUIT
circuit or electric circuit
This entry comes from Encyclopædia Britannica Concise. For the full entry on circuit, visit Britannica.com.