What type of wire is portable lamp cord most likely to have?

Portable lamp cords are most likely to have stranded wire because stranded wire is more flexible than solid wire, allowing for easier maneuverability and a higher resistance to breakage when the cable is bent or twisted. The structure of stranded wire, which consists of multiple thin wires twisted together, enables it to endure repeated movement without losing its electrical conductivity. This flexibility is particularly beneficial for portable applications like lamps, where the cord may need to be coiled or moved regularly.

In contrast, solid wire can be stiff and more prone to breakage under stress, making it less suitable for portable devices. Twisted wire refers to a specific arrangement of wires that may not necessarily provide the flexibility required for a portable lamp cord. Flat wire typically has a lower current-carrying capacity and is less commonly used in lamp cords, which require a design that allows for efficient electrical flow while being user-friendly and durable. Therefore, stranded wire is the optimal choice for the flexibility and durability needed in portable lamp applications.