河源電磁(ci)鐵(tie)的(de)磁(ci)力大小(xiao)與什(shen)么(me)有關?
影響河源電(dian)(dian)(dian)磁(ci)鐵(tie)(tie)磁(ci)力大小(xiao)的(de)(de)因素主要有四個(ge):
一是(shi)(shi)纏(chan)(chan)繞(rao)在鐵(tie)(tie)芯上線圈(quan)(quan)的(de)(de)圈(quan)(quan)數(shu),二(er)是(shi)(shi)線圈(quan)(quan)中(zhong)電(dian)(dian)(dian)流的(de)(de)強度,三是(shi)(shi)纏(chan)(chan)繞(rao)的(de)(de)線圈(quan)(quan)與(yu)(yu)鐵(tie)(tie)芯的(de)(de)距離,四是(shi)(shi)鐵(tie)(tie)芯的(de)(de)大小(xiao)形狀。
首(shou)先要了解河源電(dian)(dian)(dian)磁(ci)鐵(tie)(tie)的(de)(de)磁(ci)性是(shi)(shi)如何產(chan)生的(de)(de),通電(dian)(dian)(dian)螺線管(guan)的(de)(de)磁(ci)場(chang),由畢奧-薩伐爾定(ding)律(lv)應(ying)為(wei)(wei)(wei)B=u0*n*I,B為(wei)(wei)(wei)磁(ci)感應(ying)強度,u0為(wei)(wei)(wei)常數(shu),n為(wei)(wei)(wei)螺線管(guan)匝(za)數(shu),I為(wei)(wei)(wei)導線中(zhong)的(de)(de)電(dian)(dian)(dian)流,所以磁(ci)場(chang)大小(xiao)是(shi)(shi)由電(dian)(dian)(dian)流大小(xiao)與(yu)(yu)螺線管(guan)匝(za)數(shu)決定(ding)的(de)(de)!