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引言:本讲是教学大纲中的电场、稳恒电流内容。Ⅰ.复习要点一、知识结构 1.电场电场概念电场强度——电场强度、电场力电势--电势、电势能、电容--电容、电容器、手段——电力线、等势面。现象静电感应静电平衡静电屏蔽应用——带电粒子在电场中的运动(平衡、变速直线,偏转) 2.稳恒电流全电路基本物理量——电流、电压、电阻、电动势、电功、电功率。基本连接法——串联、并联。基本规律——欧姆定律。电阻定律、焦耳定律。基本仪表——伏特表、安培表、欧姆表。二、重要概念和规律 1.电场 (1)库仑定律——在真空中两个点电荷的相互作用力跟它们的电量乘积成正比,跟它们的距离平方成反
Introduction: This lecture is about the electric field and steady current content in the syllabus. I. review points First, the knowledge structure 1. Electric field electric field concept electric field strength - electric field strength, electric field force potential - potential, potential energy, capacitance - capacitance, capacitors, means - power lines, equipotential surface. The phenomenon of electrostatic induction electrostatic balance electrostatic shielding application - the movement of charged particles in the electric field (balanced, variable speed straight line, deflection) 2. Stable current All the basic physical quantities of the circuit - current, voltage, resistance, electromotive force, electric power, electric power. Basic connection method - series, parallel. The basic law - Ohm’s law. Resistance law, Joule’s law. Basic instruments - voltmeter, ammeter, ohmmeter. Second, the important concepts and laws 1. Electric field (1) Coulomb’s law - the interaction of the two point charges in the vacuum is proportional to the product of their charge, inversely with the square of their distance