Which of the following statements is true about solid wire?

• A. It is exceptionally flexible.
• B. It is the least flexible form of a conductor.
• C. It is used exclusively for heavy-duty applications.
• D. It is more durable than stranded wire.

Answer: (B)

The statement that solid wire is the least flexible form of a conductor is true because solid wire consists of a single, continuous strand of metal. This design inherently limits its flexibility, making it more prone to breaking when bent compared to other forms of wire, such as stranded wire, which is made up of multiple smaller strands twisted together. The construction of stranded wire allows it to bend easily without damage, making it suitable for applications where flexibility is crucial.

Solid wire does have benefits, such as potentially better conductivity and greater durability in fixed installations, but when considering flexibility specifically, it is indeed less flexible than its stranded counterparts. This characteristic makes solid wire a better choice for applications where the wire will remain stationary, while stranded wire is preferred in settings that require movement or frequent adjustments.