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在学习磁流体发电机、霍尔效应等一些实际应用问题时,笔者归纳了一种统一的方法,以期帮助同学们更好地掌握这部分内容.解决方法:(1)电势高低判断:首先知道自由电荷
When learning some practical applications such as magnetohydrodynamic generators and Hall effect, the author summed up a unified method in order to help students better understand this part of the solution. Solution: (1) Judgment of the potential: First of all, Free charge