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探究磁场力方向与磁场方向和电流方向之间的关系是高二物理教学中的一个重要内容,但是目前不同版本的教材对此处理方法是不一样的。人教版教材用放在平行导轨上的通电导体棒的运动方向结合磁场和电流方向判断三者之间的方向关系,如图1所示。沪教版教材利用悬挂起来的通电导体棒的偏转方向结合磁场和电流方向判断三者之间的方向关系,如图2所示。笔者认为这两套实验装置在实际的探究过程中都缺乏相应的科学性和严密性。在图
The relationship between the direction of the magnetic force and the direction of the magnetic field and the direction of the current is an important part of the physics teaching in the second grade. However, different versions of textbooks currently deal with this method differently. PEP textbooks use the orientation of the direction of the magnetic field and the direction of the current in the direction of the motion of the energized conductor bar placed on the parallel rail, as shown in Figure 1. The Shanghai Education Edition textbook uses the direction of deflection of the suspended powered conductor bar in combination with the magnetic field and current direction to determine the direction relationship between the three, as shown in Figure 2. The author believes that the two sets of experimental devices lack corresponding scientificity and rigor in the actual exploration process. In the figure