Final answer:
A circuit with only one current path is known as a series circuit, which maintains the same current throughout its path.
Step-by-step explanation:
A circuit having only one path for current to flow through is called a series circuit. In a series circuit, all components are connected in a sequence so that there is only one path through which the current can circulate, ensuring that the amount of current is the same at every point in the circuit. We can visualize a simple electric circuit as one containing a single voltage source, like a battery, and a single load, such as a resistor. The battery's terminals are represented by two parallel red lines, the load by a zigzag symbol, and conductors, usually metal wires, complete the connection to create a closed path for current to flow.