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教科版高中物理选修3-1第85页用如图1所示的方法对通电导体在磁场中所受的安培力进行探究。这种方法所需电流大,矩形线框一旦受力就会发生运动,弹簧秤的指针也会读数,且弹簧秤的精度不够,必然导致读数误差大,电流表的读数误差也比较大,要得到安培力与通电导线中的电流成正比关系会相当困难。笔者根据这个实验要求利用家庭厨房电子秤设计了安培力的探究演示器,取得了很好的探究效果。
Textbook Physics High School Physics Elective 3-1 page 85 Use the method shown in Figure 1 to investigate the ampere force experienced by a conducting conductor in a magnetic field. This method requires a large current, once the rectangular wire frame will be subject to exercise, the spring scale pointer will read, and the accuracy of the spring scale is not enough, will inevitably lead to reading errors, ammeter reading error is relatively large, to obtain ampere In direct proportion to the current in the conducting wire, it can be quite difficult. According to the requirements of this experiment, the author designs amps power inquiry demonstrator by using home kitchen electronic scales and has achieved good inquiry results.