电流、电压表示数的变化问题是初中物理教学的难点,同时也是中考物理的必考点,由于涉及的知识点较多,几乎覆盖了电学所有的重要的规律,综合性较强,所以学生遇到问题后,往往找不到突破口而束手无策.为此,本文以近几年中考中的典型题目为例,谈谈此类问题的解题方法. Current, voltage representation of the number of changes is the difficulty of junior high school physics teaching, but also a reference point in the physical examination, due to more knowledge points, covering almost all the important electrical laws, comprehensive, so students encounter After the problem, often can not find a breakthrough and helpless.Therefore, this article takes the typical questions in the middle school in recent years as an example to talk about the solution of such problems.