In a series circuit, what happens to the total current if one component fails?

In a series circuit, all components are connected end-to-end, forming a single path for current to flow. If one component fails, such as a resistor, bulb, or any other device by breaking the current-carrying path, this creates an open circuit. In an open circuit, current cannot flow because there is a break in the continuity of the electrical pathway.

As a result, the total current in the circuit effectively becomes zero since current requires a complete path to travel. Therefore, the correct response reflects the nature of series circuits: when one component fails, the circuit is opened, halting the flow of current entirely. This principle is fundamental in understanding how electrical circuits operate, particularly in series configurations.