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带电粒子在磁场中的运动问题是高考的难点和热点,特别是新的物理考试大纲将动量要求大幅度降低后,这类问题在高考中地位必将更为突出.由于带电粒子在磁场中的运动求解时间问题经常出现,而学生在解题的过程中由于物理知识不到位常常不能解答完整.笔者在教学过程中,对时间问题的求解进行总结和归类,要求学生在解答过程中参照这些方法一一分析,取得了较好的教学效果.一、时间求解的基本方法在高中物理磁偏转求时间问题的基本方法有二种:方法 1,
The movement of charged particles in the magnetic field is the difficulty and hot spots of the college entrance examination, especially the new physical examination program to greatly reduce the momentum requirements, such problems will be more prominent in the college entrance examination due to the charged particles in the magnetic field The problem of the solution time of the movement often appears, and the student often can not answer the completeness in the solution process because of the lack of physical knowledge.In the course of teaching, the author summarizes and classifies the solution of the time problem, and asks the students to refer to these in the solution process Method one by one analysis, and achieved good teaching effect.First, the basic method of time to solve the high school physics magnetic deflection time problem there are two basic methods: Method 1,