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科学探究是研究和学习物理的重要方法。在探究活动中,对实验现象、数据等进行分析和论证,是科学探究的重要环节。在电路问题中,有一类盒内电路结构未知,只知盒外灯泡发光情况的题目,探究盒内的电路结构时,要运用电路知识综合分析灯泡的发光情况及其他信息,在分析的基础上进行推理与判断,从而确定盒内的电路结构。例1(2006北京海淀区中考题)小刘有一个电路盒面板(如图1所示),有红、绿灯各一只,两个开关、一个电压表。在
Scientific inquiry is an important method for studying and learning physics. In the exploration activities, analysis and demonstration of experimental phenomena and data are important links in scientific inquiry. In the circuit problem, there is a type of unknown circuit structure inside the box, only know the problem of light emission outside the box, when the circuit structure in the box is explored, the circuit knowledge should be used to comprehensively analyze the light emission and other information of the light bulb, based on the analysis. Make inferences and judgments to determine the circuit structure inside the box. Example 1 (2006 Beijing Haidian District Examination Questions) Xiao Liu has a circuit box panel (as shown in Figure 1) with one red and one green light, two switches, and one voltmeter. in