物理实验
物理實驗
물리실험
Physics Experimentation
2015年
11期
17-18
,共2页
电磁场%电磁铁%电子秤
電磁場%電磁鐵%電子秤
전자장%전자철%전자칭
electromagnetic field%electromagnet%electronic balance
设计了3种探究影响电磁铁磁性强弱的因素的方法，即软铁棒称量法、大头针计数法、小钢珠计数法。通过改变线圈匝数和电流大小，用电子秤称量出软铁棒和电磁铁吸引的大头针和小钢珠的质量来演示磁性强弱。
設計瞭3種探究影響電磁鐵磁性彊弱的因素的方法，即軟鐵棒稱量法、大頭針計數法、小鋼珠計數法。通過改變線圈匝數和電流大小，用電子秤稱量齣軟鐵棒和電磁鐵吸引的大頭針和小鋼珠的質量來縯示磁性彊弱。
설계료3충탐구영향전자철자성강약적인소적방법，즉연철봉칭량법、대두침계수법、소강주계수법。통과개변선권잡수화전류대소，용전자칭칭량출연철봉화전자철흡인적대두침화소강주적질량래연시자성강약。
Three methods were designed to explore the influencing factors of the strength of elec‐tromagnet ,namely the soft‐iron bar weighing method ,the pin counting method and the small steel ball counting method .By changing the number of turns of the coil or the current and weighing the pins or small steel balls attracted by the soft‐iron bar or electromagnet by electronic balance , the strength of the magnet was demonstrated .
