大学物理 ›› 2022, Vol. 41 ›› Issue (9): 15-.doi: 10.16854/j.cnki.1000-0712.210591

• 教学讨论 • 上一篇    下一篇

导线是什么东西?

李祖斌   

  1. 南开大学 物理科学学院,天津300071
  • 收稿日期:2021-12-01 修回日期:2021-12-21 出版日期:2022-09-20 发布日期:2022-09-30
  • 作者简介:李祖斌(1978—),男,吉林白山人,南开大学教授,博士,主要从事基础物理教学和微纳光学研究工作.
  • 基金资助:
    教育部第二批新工科研究与实践项目(E-SXWLHXLX20202605)资助

What is the conductor wire?

LI Zu-bin   

  1. School of Physics,Nankai University,Tianjin 300071,China
  • Received:2021-12-01 Revised:2021-12-21 Online:2022-09-20 Published:2022-09-30

摘要: 导线作为电路中的连接元件不可或缺但又常常被忽视.本文讨论了零电阻的理想导线和实际导线的性质,解释了理想导线性质的推论中的矛盾.我们可以用理想导体来理解理想导线的性质,用电阻来处理实际导线在电路中的作用.

关键词: 导线, 理想导体, 电阻

Abstract:  As a connecting element in circuit,the conductor wire is indispensable but often neglected. This paper discusses the properties of the ideal conductor wire with zero resistance and the actual conductor wire,and explains the contradiction of the deductions from the properties of the ideal conductor wire. We can take the ideal conductor wire as perfect conductor to understand its properties and take the actual conductor wire as resistor to deal with its role in circuit.

Key words: conductor wire, perfect conductor, resisit