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带电粒子在复合场中的运动是电磁学中的重点知识,也是历年高考命题热点之一。高考中此考点考查方式灵活、设置情境新颖,密切联系实际,对学生分析、解决实际问题的能力要求较高。分析带电粒子在复合场中运动的方法和思路如下:1.弄清复合场的组成,如磁场与电场复合,磁场与重力场复合,或磁场、电场、重力场三者复合。2.正确进行受力分析,一般不需要考虑弹力和摩擦力,特别注意电场力和磁场力。3.确定带电粒子的运动状态,注意运动情况和受
The movement of charged particles in the composite field is the key knowledge in electromagnetics and also one of the hot topics in the entrance exams over the years. Entrance exam in the college entrance examination test mode is flexible, setting the situation is new, closely linked to the actual, the students analysis, the ability to solve practical problems higher. The methods and ideas for analyzing the movement of charged particles in a composite field are as follows: 1. To clarify the composition of the composite field, such as the combination of a magnetic field and an electric field, a combination of a magnetic field and a gravitational field, or a combination of a magnetic field, an electric field and a gravitational field. 2. Proper force analysis, generally do not need to consider the elastic force and friction, with special attention to the electric field and magnetic field force. 3 to determine the movement of charged particles, pay attention to exercise and subject