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

In a series circuit, all components are connected end-to-end, which means that they share the same current. If one component in a series circuit fails—typically by becoming an open circuit or being removed—there is a break in that continuous path for the current to flow. This interruption means that current can no longer complete the circuit and, therefore, the flow of electricity ceases entirely. As a result, the current stops flowing completely throughout the entire circuit because the connection has been compromised. This characteristic of series circuits highlights the importance of each component; if one fails, it affects the entire circuit's ability to operate.