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带电粒子在磁场中的运动是高中物理学习的重点、难点,也是高考热点。带电粒子在各种磁场中的运动问题,综合性较强,解这类问题往往要用到圆周运动的知识、洛仑兹力、还要牵涉到数学中的平面几何、解析几何知识。下面我对带电粒子在各种磁场中的运动问题进行分类解析。一、带电粒子在足够大的长方形磁场中的运动例1.如图所示,一束电子(电量为e)以速度v垂直射入磁感强度为B,宽度为d的匀强磁场中,穿透磁场时
The movement of charged particles in the magnetic field is the focus of high school physics study, the difficulty, but also hot college entrance examination. Charged particles in a variety of magnetic field movement problems, comprehensive strong solution of such problems often use the knowledge of circular motion, Lorentz force, but also involves the plane geometry in mathematics, analytical geometry knowledge. Now I classify the motion of charged particles in various magnetic fields. First, the charged particles in a sufficiently large rectangular magnetic field of motion 1. As shown, a bunch of electrons (electric power e) perpendicular to the velocity v into the magnetic induction intensity B, width d uniform magnetic field, Penetrate the magnetic field