Which electrical component provides a single path for current to flow?

A series circuit provides a single path for current to flow because all components in the circuit are connected one after another, creating one continuous pathway for electrons. When the circuit is closed, the current flows through each component in sequence, without any branching paths. This means that if one component fails, the entire circuit is interrupted, and current cannot flow.

In contrast, a parallel circuit has multiple paths for current, allowing it to split and flow through different branches simultaneously. A transformer is used to change the voltage of an alternating current and does not provide a pathway for current flow in the same way a series circuit does. A capacitor stores electrical energy and releases it, rather than facilitating a continuous flow of current. Hence, the answer is clearly focused on the defined nature of a series circuit and its ability to provide a singular path for current.