Which of these devices typically uses serial circuits?

String lights with simple dividers commonly utilize serial circuits because they are designed to allow current to flow through each light bulb in sequence. In such a configuration, if one bulb goes out or is removed, the entire circuit is interrupted, causing all the bulbs to go out. This characteristic of serial circuits makes them particularly suitable for decorative string lights, where the bulbs are often wired in a row.

In contrast, devices like televisions, computers, and refrigerators typically use parallel circuits. This allows them to operate independently of one another; if one component fails, it doesn't affect the operation of the others. For example, if a specific circuit in a computer fails, other circuits can still function, ensuring the device remains operational. Similarly, if one light in a parallel-wired string fails, the other lights continue to shine. Therefore, string lights serve as a clear example of devices that operate with serial circuits.