解电学题,首先要分析电路,要把题目是什么电路先搞懂,否则就不好应用其基本规律。除了分析电路以外,第二步要分析的就是电路中的电表,一定要正确看懂电表起什么作用,这样我们就能用正确的物理量表达出题目的已知条件,然后才能开展下面的工作。为了把已知条件中各物理量的关系搞清楚,可以画出一个表格来。表格如下: To solve electricity problems, we must first analyze the circuit. We must first understand what the title of the circuit is. Otherwise, we will not apply its basic laws. In addition to the analysis circuit, the second step is to analyze the meter in the circuit. It must be understood exactly what the meter does, so that we can use the correct physical quantity to express the known conditions of the problem before we can carry out the following work. In order to clarify the relationship between the physical quantities in known conditions, a table can be drawn. The table is as follows: