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对中学生讲授电势这一课题,是物理教学中比较困难的问题之一,据我的经验,学生的问题是: (1)对电势的概念,难於体会。(2)对於电势的定义,(从无穷远处,使一单位阳电荷,移至场内某点所作的功),感觉不易了解,不易接受。(3)对於电势的表示式V=q/εγ不明来历,至於怀疑。我以为问题的关键,在於电势的概念,如果把电势的概念讲清楚了,学生自己就会得出电势定义的结论来,至於电势的公式,最好是利用学生的算学基础,证明一下,
The subject of teaching a potential to secondary school students is one of the more difficult problems in physics teaching. According to my experience, students’ problems are: (1) The concept of potential is difficult to understand. (2) For the definition of potential, (from infinity, a unit of positive charge, moved to a point at the field of work), I feel difficult to understand, not easy to accept. (3) For the potential of the expression V = q / εγ unknown origin, as to suspect. I think the crux of the problem is that the concept of potential, if the concept of potential is clear, the students will come to the conclusion that the potential is defined, as the formula of the potential, it is best to use the basis of the students’ mathematics, to prove that,