سیم
Also known as metal wire, metallic wire
thumb|Overhead power cabling. The conductor consists of seven strands of steel (centre, high tensile strength), surrounded by four outer layers of aluminium (high conductivity). Sample diameter 40 mm
AI overview
Wire is a thin strand of metal, like the power cables shown here that combine steel for strength with aluminum for conducting electricity efficiently. It matters because these materials working together allow wires to safely carry electrical power over long distances without breaking or losing too much energy.
AI-generated from the Wikipedia summary — may contain errors.