電磁鐵定義

電(dian)磁(ci)鐵(tie)是(shi)通(tong)電(dian)產(chan)生(sheng)電(dian)磁(ci)的(de)一(yi)種(zhong)裝(zhuang)置(zhi)。在(zai)鐵(tie)芯(xin)的(de)外(wai)部(bu)纏(chan)繞(rao)與(yu)其(qi)功(gong)率(lv)相(xiang)匹(pi)配(pei)的(de)導(dao)電(dian)繞(rao)組(zu)

，這(zhe)種(zhong)通(tong)有(you)電(dian)流(liu)的(de)線(xian)圈(quan)像(xiang)磁(ci)鐵(tie)一(yi)樣(yang)具(ju)有(you)磁(ci)性(xing)，它(ta)也(ye)叫(jiao)做(zuo)電磁鐵（electromagnet）。我wo們men通tong常chang把ba它ta製zhi成cheng條tiao形xing或huo蹄ti形xing狀zhuang
，以yi使shi鐵tie芯xin更geng加jia容rong易yi磁ci化hua。另ling外wai，為wei了le使shi電dian磁ci鐵tie斷duan電dian立li即ji消xiao磁ci
，我wo們men往wang往wang采cai用yong消xiao磁ci較jiao快kuai的de的de軟ruan鐵tie或huo矽gui鋼gang材cai料liao來lai製zhi做zuo。這zhe樣yang的de電dian磁ci鐵tie在zai通tong電dian時shi有you磁ci性xing
，斷duan電dian後hou磁ci就jiu隨sui之zhi消xiao失shi。電dian磁ci鐵tie在zai我wo們men的de日ri常chang生sheng活huo中zhong有you著zhe極ji其qi廣guang泛fan的de應ying用yong
，由you於yu它ta的de發fa明ming也ye使shi發fa電dian機ji的de功gong率lv得de到dao了le很hen大da的de提ti高gao。