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电阻的测量一直是高考的热点内容,它可以综合考查学生各方面的知识和能力。主要包括以下四个方面:根据实验原理设计电路的创新思维能力;选用变阻器是作限流作用还是作分压作用的分析综合能力;选择电表、变阻器、电源等实验器材的推理判断能力;实物连线的实验动手能力。测量电阻的方法除欧姆表法、
Resistance measurement has always been a hot topic of college entrance examination. It can comprehensively examine students’ knowledge and capabilities in various aspects. It mainly includes the following four aspects: the circuit’s innovative thinking ability is designed based on the experimental principle; the use of rheostats is used as a current limiting function or a partial pressure analysis integrated capability; and the inference ability of experimental equipment such as electricity meters, rheostats, and power sources is selected; Line’s experimental hands-on ability. Measuring resistance in addition to ohmmeter method,