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高中物理中介绍了速度选择器,速度选择器两极板间有正交的匀强电场和匀强磁场.带电粒子垂直匀强电场和匀强磁场方向进入速度选择器,且速度大小等于电场强度E跟磁感强度B之比E/B将做匀速直线运动.如果带电粒子的速度大小不等于选择速度E/B,粒子将做什么运动,其运动轨迹怎样?这类问题高考压轴题中也会涉及.如2011年福建物理高考压轴题第题如图甲在的空间中存在沿轴
High speed physics introduced the speed selector, the speed selector has two orthogonal polar uniform electric field and uniform magnetic field.Electrified particles vertical uniform electric field and uniform magnetic field into the speed selector, and the speed is equal to the size of the electric field E With the magnetic intensity B of the ratio of E / B will do uniform linear motion. If the charged particle velocity is not equal to the size of the choice of speed E / B, the particle will do what movement, the trajectory of how? Involved. As in 2011 Fujian physics entrance exam questions such as the subject axis in the space there is along the axis