From Wikipedia, the free encyclopedia
電線,又寫電綫,金屬線造,可以通電。再包絕緣皮,就唔會漏電。包咗之後,金屬部份就叫綫芯。內裏電比喻以水流咁叫電流。可以幾條電綫再包絕緣,都叫電綫。電綫一端兩端,通常加上接口,因用途而形制唔同,花款繁多。
綫芯所用金屬,大多為銅,貪佢導電率好。貪平就會用鋁。高檔就會用金、銀。
今下絕緣多數用塑膠,所以會燒得着,而且會沿綫,一發不可收拾。有必要時,會用唔燒得着嘅料做皮。
電綫通電,會散發電磁能。有啲精密儀器,會受干擾。又或外面電磁噪音,干擾訊號電綫。故此電綫有啲電綫會加層金屬套。
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.