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复习时在初步理解对场的描述的基础上,侧重解决带电粒子(物体)在匀强电场及匀强磁场中的运动问题,提高分析综合能力,是重点复习的方向.1 从对电偏转问题的剖析谈起带电粒子(电量q、质量m)垂直电场方向射入充电的平行板电容器间的匀强电场(场强为E),受电场力作类似平抛运动.即在垂直电场线方向粒子以初速度v_0做匀速运动,在沿电场线方向粒子做匀加速直线运动.从射入到射出,粒子运动的时间和加速度
During the review, based on the preliminary understanding of the description of the field, focusing on resolving the motion problems of charged particles (objects) in homogeneous electric fields and uniform magnetic fields, and improving the comprehensive ability of analysis, it is the focus of review. The analysis is about the uniform electric field (field strength E) between the parallel plate capacitors charged by the charged particles (electrical q, mass m) in the direction of the vertical electric field, and the electric field force is similar to the flat throw motion. That is, the particles in the direction of the vertical electric field lines. The uniform velocity motion is performed at the initial velocity v_0, and the particles are uniformly accelerated linear motion along the direction of the electric field line. From the injection to the ejection, the time and acceleration of the particle motion