What happens to devices in a series circuit when one device fails?

In a series circuit, all devices (or components) are connected in a single path, meaning that the electrical current flows through each device one after another. When one device fails in a series circuit, it creates an open circuit, preventing the flow of current. As a result, the entire circuit becomes inactive, and subsequent devices cannot operate because they are no longer receiving electrical current.

This behavior contrasts with parallel circuits, where each device has its own individual path to the power source. In a parallel circuit, if one device fails, the others can still operate since they are not reliant on a single pathway for the current.

Therefore, in the context of the series circuit, the correct response is that all devices become inactive when one fails, as the interruption affects the entire circuit.