对长直导线周围涡旋电场的几点讨论

Discussions of Induced Electric Field around Long-straight Wire

通过对长直导线通以变化电流时所产生的涡旋电场的分析、讨论，给出了涡旋电场分布公式，并着重对其分布特点，进行了讨论和说明。

When the long-straight wire is passed through by varying electric current, there is induced electric field, Through analying and discussing it, we get the distributing formula,and furthermore we primarily discuss and interpret its distributing peculiarity.