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一、考点分析有关静电场的知识点与公式关联关系如图1所示,具体来说呈现以下特点:1.概念多、抽象、容易混淆.电场强度、静电力、电势、电势差、电势能、静电力做功等都是新出现的概念,同学们要区别记忆.2.公式多.同学们在理解公式的来龙去脉、物理意义、适用条件的同时,可将其归类.3.正负号含义多.在静电场中,物理量的正负号含义不同,同学们要正确理解.
First, the test site analysis of the electrostatic field knowledge point and formula associated relationship as shown in Figure 1, specifically presents the following characteristics: 1. Concept, abstract, easy to confuse. Electric field strength, electrostatic force, potential, potential difference, potential energy, Electrostatic force work and so on are all new concepts. Classmates should distinguish between memories. 2. Formulas are many. Students understand the ins and outs of the formula, its physical meaning and applicable conditions, and they can be classified. 3. Sign meaning In the electrostatic field, the meaning of the sign of the physical quantity is different, and the students must understand it correctly.