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带电粒子在匀强磁场中的圆运动是高中物理中的一个重点,也是高考命题的热点。在解有关带电粒子在匀强磁场圆运动的问题中,如果学生不能准确、快速地作出轨迹圆,就无法寻找到解决问题需要的几何关系,会直接影响了对该类问题的解答。因此,画出运动粒子的轨迹圆是该类问题的关键,也是一个难点。在不同的已知条件下的带电粒
The circular motion of charged particles in a uniform magnetic field is a key point in high school physics, and is also a hot spot for college entrance examination propositions. In solving the problem that the charged particles move in a uniform magnetic field circle, if students cannot make the trajectory circle accurately and quickly, they cannot find the geometric relationship needed to solve the problem, which will directly affect the solution to the problem. Therefore, drawing the trajectory circle of moving particles is the key to this kind of problem, and it is also a difficult point. Charged particles under different known conditions