battery, wire, and light bulb
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An open circuit
Any complete circuit. ==== An electrical circuit.
Integrated Circuit
The four elements of a complete (electrical) circuit: 1)A source of input (power supply) 2)A means of conductivity (usually wire) 3)A means by which to open and close the circuit (a switch) 4)An output device (motor, light bulb, etc)
A series circuit or a parallel circuit