What circuit that has only one path for the

current to follow?

Series circuit

Explanation:

By definition series circuit is a closed circuit in which the flow of electric current follows only one path.

In a simple electrical circuit (which is a series circuit) where electric cell is the source of power, each component is connected in such a way that there is only one pathway current flows from the positive terminal (+) round to the negative terminal (-) via the external circuit.

Current having only one pathway to flow means that when one of the components is removed, there will be no current flow.