“带电粒子在匀强电场中的运动”一节的教学中,常有相形的问题,但由于带电粒子在电场中受力方向有不同,决定了带电粒子有不同的运动形式.有的只是题设的微小变化.却存在较大的差异.本文从带电小球作做圆周运动、做直线运动、做来回摆动的三种运动方式分别举例说明. “Charged particles in a uniform electric field ” section of the teaching, there are often problems of phase, but because of charged particles in the electric field in different directions, determines the charged particles have different forms of motion. Only a slight change in the title, but there is a big difference.This article from the charged ball for circular motion, do linear motion, back and forth swinging three kinds of exercise are exemplified.