For example, in a simple circuit involving a battery and a light bulb, current travels down one wire from the battery to the bulb, through the bulb and back to the battery via another wire completing the circuit.
(a simple circuit; involving; a battery and a light bulb) (current; travels; down one wire; L:in a simple circuit) (another wire; completing; the circuit)
a simple circuit current another wire
involving travels completing
a battery and a light bulb
down one wire L:in a simple circuit
the circuit