带电粒子穿过电场进入磁场,既涉及力、电、磁,又涉及三种基本运动(匀变速直线运动、类平抛运动、匀速圆周运动)现象,对主干知识涵盖的广泛性和对能力考查的全面性是其他试题无法替代的.其试题设计的难易程度有很大的延展性,可繁可简,为试题的设计提供了许多便利条件.带电粒子在电场中的运动 Charged particles through the electric field into the magnetic field, both involved in the force, electricity, magnetic, but also involves three basic movements (uniform speed linear motion, flat throwing motion, uniform circular motion) phenomenon, covering the broad knowledge of the main knowledge and ability test The comprehensiveness of the other test questions can not be replaced.The difficulty of the test design has a great scalability, can be simple and easy, for the design of the test provides many convenient conditions.Stochastic particle movement in the electric field