摘要
在论证分析磁力作功能量来源基础上,深入讨论了物理教学中"磁力作功"的问题。认为磁力作功公式A=I△Φm中的电流I"保持恒定"这一条件是否成立值得商讨。
The problem of work done by magnetic force is discussed in detail on the basis of proving and analyzing the power source of the work done by magnetic force. The expression for the work done is A = I△Фm. It is considered that the electric current I in this expression should keep constant may not be practical. It is worthwhile for further exploring.
关键词
电磁感应
电动势
磁力作功
electromagnetic induction
electromotive force
wok done by magnetic force
