论文部分内容阅读
考点一“磁偏转”模型方法规律:1.基本规律当带电粒子速度方向与匀强磁场方向垂直时,它在垂直于磁感应线的平面内做匀速圆周运动,其轨迹为圆周或圆弧的一部分.1粒子所受洛伦兹力充当向心力有:qvB=mv2R由此推得:R=mv qB;2粒子做圆周运动的周期:T=2πm qB.2.基本方法
Test point a “magnetic deflection ” model method law: 1. Basic law When the charged particle velocity direction and uniform magnetic field perpendicular to the direction, it is perpendicular to the magnetic induction line in the plane to do a uniform circular motion, the trajectory of a circle or arc Particles subjected to Lorentz force acting on the centripetal force are: qvB = mv2R thus derived: R = mv qB; 2 particles do circular motion cycle: T = 2πm qB.2. The basic method