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解决带电粒子在匀强磁场中的匀速圆周运动问题时,应首先画好草图,确定带电粒子在磁场中的运动轨迹,然后利用几何关系,结合运动规律求解。其中必须掌握确定轨道圆心、计算轨道的半径和圆心角的基本方法。1圆心的确定画出粒子运动轨迹中任意两点(一般是射入和射出磁场的两点)的洛
To solve the problem of uniform circular motion of a charged particle in a uniform magnetic field, a sketch should be drawn first to determine the trajectory of the charged particle in the magnetic field, and then use the geometric relationship and the motion law to solve. Which must master the basic method of determining the orbit center, calculating the radius of the orbit and the central angle. 1 The determination of the center of the circle draws at any two points (usually two points into and out of the magnetic field) in the particle motion trajectory.