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Gaokao Physics Practice Question

1. (6 分)两相邻匀强磁场区域的磁感应强度大小不同、方向平行。一速度方 向与磁感应强度方向垂直的带电粒子(不计重力,,从较强磁场区域进入到 较弱磁场区域后粒子的()

  1. A.轨道半径增大, 角速度增大
  2. B.轨道半径增大, 角速度减小
  3. C.轨道半径减小, 速度增大
  4. D.轨道半径减小, 速度不变

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