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电功、电功率这部分内容虽然不多 ,但由于与欧姆定律、电路特点及电路结构等变化结合起来命题 ,使出题范围比较宽、考点多 ,作为中考压轴题出现的频率高 ,在中考题中所占的分量重 .综观近几年各省、市中考题 ,命题主要包含以下几个知识点 .1 电流做功的实质电流通过各种用电器
Electric power, electric power, although not much part of this content, but due to Ohm’s law, circuit characteristics and circuit structure and other changes combined propositions, so that a wider range of questions, test sites, as the high frequency of test questions appear in the middle of the exam questions The weight of the components in the review. In recent years, the provinces and cities in the examination questions, the propositions mainly include the following knowledge points. 1 The actual current of the current work through a variety of electrical appliances