欧姆定律是整个初中物理电学的核心内容和中考的热点内容,纵观全国各省市近几年的物理中考试题,这一章的内容一般占总分值的10%～15%左右,主要考点有电路分析、定量计 Ohm’s law is the core content of the whole junior middle school physics electricity and the hot content of the examination. Throughout the physics examination questions in various provinces and cities in recent years, the content of this chapter generally accounts for about 10% to 15% of the total score. The main test sites are Circuit analysis, quantitative meter