If a circuit burns out in a series circuit, what happens to the other circuits?

• A. Only the burnt circuit fails
• B. All circuits go out
• C. The remaining circuits operate normally
• D. Power is redirected to another circuit

Answer: (B)

In a series circuit, all components are connected end-to-end in a single path for current to flow. This means that if one circuit or component in that series burns out or fails, it creates an open circuit. As a result, electric current cannot flow through the entire series circuit anymore. Because current has only one path to take, the failure of one component disrupts the flow, causing all other components in the series to cease functioning. Therefore, the correct response is that all circuits are affected and go out when one component fails, as the electrical pathway is broken.