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电场强度E与电势φ是《静电场》中最重要的两个基本概念,对它们的理解程度直接影响对本章的学习,尤其是点电荷组的场强和电势问题,更是高考中经常考查的知识点.高二学生在新课学习的过程中,普遍感到有一定的难度,即使是高三的学生,经过复习后,在高考中对这一问题的考查,差错率也很高.笔者通过八个图线归纳分析它们的区别和联系,以帮助学生更深刻地理解,达到灵活运用的目的.说明:(1)只探讨点电荷组的连线上,电场强度及电势随距离变化的情况
The electric field strength E and the potential φ are the two most important concepts in the “electrostatic field”. The understanding of them directly affects the learning of this chapter, especially the field strength and potential of the point charge group. The sophomore students in the new course of learning, generally felt a certain degree of difficulty, even the third year of students, after reviewing, in the college entrance examination on this issue examination, the error rate is also high.I author through eight A graph of induction and analysis of their differences and contacts to help students understand more deeply, to achieve the purpose of flexible use. Description: (1) only to explore the point charge group connection, electric field strength and potential changes with distance