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电学计算题综合性强、应用性强,能培养 学生灵活的分析能力、思维能力和理论联系实 际的能力是教学和中考的重点．本文就初中物 理电学计算题进行分类举例分析． 一、电路结构稳定型题 这类题的特点是电路的连接方式及描述参 量稳定不变,只要掌握了基本概念和规律,就很 容易找到突破口．如可用倒推法去分析,即从 所求量出发,看求出它需要哪些量;如果这些量 电学计算题综合性强、应用性强,能培养 学生灵活的分析能力、思维能力和理论联系实 际的能力是教学和中考的重点．本文就初中物 理电学计算题进行分类举例分析． 一、电路结构稳定型题 这类题的特点是电路的连接方式及描述参 量稳定不变,只要掌握了基本概念和规律,就很 容易找到突破口．如可用倒推法去分析,即从 所求量出发,看求出它需要哪些量;如果这些量
The electric calculation problem has a strong comprehensive and practical application. It can train students’ agile analytical abilities, thinking abilities, and the ability to connect theory with practice. This is the focus of teaching and examination. This article classifies and analyzes the example of physics calculation for junior middle school. First, the stable structure of the circuit title The characteristics of such problems are the connection of the circuit and describe the parameters of stability, as long as you master the basic concepts and laws, it is easy to find a breakthrough. If you can use the inverse method to analyze, that is, starting from the quantity required, see what quantities it needs; if these quantities of electrical calculation problems are comprehensive and practical, they can cultivate students’ flexible analytical ability, thinking ability and theoretical connection. The actual ability is the focus of teaching and examination. This article classifies and analyzes the example of physics calculation for junior middle school. First, the stable structure of the circuit title The characteristics of such problems are the connection of the circuit and the description of the parameters of stability, as long as you master the basic concepts and laws, it is easy to find a breakthrough. If you can use the inverse method to analyze, that is, starting from the quantity you are looking for, you can see what quantities it needs; if these quantities