高考“恒定电流”的重点是闭合电路欧姆定律的应用,电功、电热的计算,电阻、电压和电流的测量。其中电路分析——包括电阻变化、含电容电路、非纯电阻电路等动态分析,运用电路知识探究联系实际问题已成为考查的热点,近几年设计性电学实验是每年必考内容。“恒定电流”试题涉及面广,其显著特点是突出主干知识,没有偏题、怪题和难题。对2007年各地高考卷中的相关试题进行归类分析,寻找命题规律,探究解题技巧,有利于明确复习方向。2007年高考“电路”考查凸现新课改理念,命题时注意了能力考 The focus of the college entrance examination “constant current” is the application of the closed circuit Ohm’s law, calculation of electric power, electric heat, measurement of resistance, voltage, and current. Among them, circuit analysis—including dynamic analysis of resistance changes, capacitance-containing circuits, and non-pure resistance circuits—has become a hot spot for investigations and the use of circuit knowledge to explore and relate practical problems. In recent years, design-based electrical experiments are mandatory for each year. The “constant current” test covers a wide range of issues. Its distinctive feature is the highlighting of the backbone knowledge, with no biases, strange problems, and difficult problems. The classification analysis of relevant questions in the college entrance examination papers in 2007 to find proposition laws and explore the problem-solving skills is conducive to a clear review of the direction. The 2007 college entrance examination “circuit ” examination highlights the new curriculum reform concept, proficiency test