What happens to current in a series circuit if one component fails?

In a series circuit, all components are connected along the same path, meaning that the same current flows through each component. If one component fails or becomes an open circuit, it creates a break in the pathway. This interruption halts the flow of current throughout the entire circuit because there is no alternative route for the current to take.

Thus, when one component in a series circuit fails, the current effectively stops flowing, impacting the other components as they rely on that continuous flow to function. The integrity of a series circuit relies on each component being operational, and failure in one leads to a complete cessation of current. This characteristic is foundational in understanding how components interact within series circuits.