What best describes a series circuit?

A series circuit is best described as a configuration where devices are connected end to end, creating a single path for the electric current to flow. This means that the current that flows through one device must flow through each subsequent device in the circuit. If any device in the series fails or is removed, the entire circuit is interrupted, causing all devices to stop functioning. This characteristic of series circuits is essential for understanding how they operate and how they differ from parallel circuits, where devices are connected across multiple paths, allowing current to flow through one or more devices independently.

In summary, the defining feature of a series circuit is its single pathway for current, which is critical when considering circuit design and functionality in various applications.