摘要
针对高中物理电磁学运用右手螺旋定则判断电流方向与磁感应强度方向的内容,根据螺丝钉顺时针旋进、逆时针旋出的原理,提出一种新方法——螺丝钉法。运用螺丝钉法可以解决电流方向与磁感应强度方向在不同的物理情景(如直路电流、环形电流、通电螺旋管)下的判断。通过与安培定则进行比较,螺丝钉法显得更快捷方便。
A new screw rule was proposed to determine the relationship between the current direction and the magnetization direction in different physical scenario（such as straight current,ring current and energized spiral pipe） based on the principle of the clockwise-in and counterclockwise-out of the screw in the high school electromagnetism teaching.Compared with the traditional Ampere＇s rule,in which the direction of current and magnetic is determined with the Right-handed screw rule,the screw rule is more convenient and faster.
出处
《实验科学与技术》
2013年第2期88-90,106,共4页
Experiment Science and Technology
基金
2008年国家级实验教学示范中心建设单位项目资助(教高函[2009]5号)
2010年新世纪广西高等教育教改工程立项项目(2010JGB014)
关键词
电磁感应
电流方向
判断
螺丝钉
electromagnetism induction
current direction
determine
screws
