电场部分的内容本身比较抽象,且具有一定的难度,所以在学习电场时,很多同学感觉满脑子都是问题:场强的大小和方向、电场力的大小和方向、电势的高低等以及它们之间的联系,同时电荷有正负之分也使问题复杂化。上述问题看似纵横交错,头绪繁多,其实在复习时能把握以下几点,掌握电 The content of the electric field is relatively abstract, and it has a certain degree of difficulty. Therefore, when studying the electric field, many students feel that their brains are full of problems: the size and direction of the field strength, the size and direction of the electric field force, the level of the electric potential, etc., and their The connection between the two, as well as the fact that the charge is divided, also complicates the problem. The above problems seem to be criss-crossing and have many clues. In fact, they can grasp the following points when reviewing and grasp the power.