What is an example of a series circuit?

A series circuit is characterized by components connected end-to-end in a single path for current flow. In the case of a string of holiday lights, each light is wired sequentially so that the electric current passes through one light and then into the next. If one light bulb burns out or is removed, the entire circuit is interrupted, and all the lights go out. This is a defining trait of series circuits, highlighting how the components depend on each other to complete the circuit.

The other options do not exhibit the same characteristics of a series circuit. For instance, a home wiring system generally consists of parallel circuits, where multiple outlets and devices can operate independently. Similarly, household appliances plugged into outlets also operate on parallel circuits, allowing each appliance to function separately without affecting others. A radio receiving AM and FM signals involves circuits that process different frequencies simultaneously, which again does not represent a series circuit configuration.