电流磁效应是中学学习电磁现象的重要基础知识之一,学生学习该知识点时需要明确两点:一是通电导体周围存在磁场;二是磁场的方向与电流的方向有关。为了让学生更好地掌握上述知识点,笔者以一种更新颖更形象的方式来呈现这一经典的电磁理论,希望对教学有所帮助。一、目前使用的电流磁效应演示装置分析 Current magnetic effect is one of the important basic knowledge of electromagnetic phenomena in secondary school learning. Students need to know two points clearly when learning this knowledge point: first, there is a magnetic field around the conducting conductor; second, the direction of the magnetic field is related to the direction of the current. In order to enable students to better grasp the above point of knowledge, the author presents the classic electromagnetic theory in a newer and more vivid way, hoping to help teaching. First, the current use of magnetic effects demo device analysis