欧姆定律是电学的一个重要的定律,反映了电流、电压、电阻这三个重要的电学量之间的关系,是电学中最基本的定律,也是分析解决电路问题的金钥匙。这类考题知识覆盖面大,重复率高,难度可大可小,创新性强,很值得关注.它可以在各种题型中出现.例如:进行实验设计,包括实验方案的设计,电路图的设计,以及实物连接和电路连接;电路变化分 Ohm's law is an important law of electricity, reflecting the relationship between the three important electrical quantities of current, voltage and resistance. It is the most basic law in electricity and the golden key to analyze and solve circuit problems. Such questions covered a large knowledge of knowledge, high repetition rate, the degree of difficulty can be large and small, innovative and worthy of attention. It can appear in a variety of questions. For example: experimental design, including experimental design, circuit design , And physical connection and circuit connection; circuit changes