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电学计算题大致可分为两类:一类是电路不变化,另一类是电路变化,如变阻器滑片的移动、开关的断开闭合等,解题时要注意电路连接方式的变化。一、解题的一般步骤1.读懂题意。(1)搞清楚电路的连接情况,有时需要根据题意画出等效电路图。(2)明确电流表、电压表所测电路。(3)分析题目要求解决的问题、已知条件、已知量,发现隐含条件。2.仔细审题。综合运用电学公式定律、串并联电路特点、比例关系。(1)分析电路的组成部分,各部分物理量之间的关系。(2)从
Electrical calculation can be broadly divided into two categories: one is the circuit does not change, and the other is the circuit changes, such as rheostat vane movement, the switch off and so on, the problem should pay attention to changes in circuit connection. First, the general steps to solve the problem 1. Understand the questions. (1) to find out the connection of the circuit, and sometimes need to draw the equivalent circuit diagram. (2) clear ammeter, voltmeter measured circuit. (3) Analysis of the problem to be solved, known conditions, known quantities, found that implicit conditions. 2 carefully examines Comprehensive use of the law of electrical formula, series and parallel circuit characteristics, the proportion of relations. (1) Analysis of the circuit components, the relationship between the various physical quantities. (2) from