一、高考解读高考对本部分的考查集中在对带电粒子在匀强磁场中运动的理解和应用上,题型多为选择题和计算题,而且题目往往综合了力学与电磁学,难度较大.另外,这部分知识常与数学知识结合,因此解答此类试题时需要画岀轨迹图,结合几何关系,确定圆周运动的半径、圆心和运动时间等.二、例题分析 First, the college entrance examination interpretation of this part of the test focus on the particles in the uniform magnetic field in the understanding and application of motivation, the questions are mostly multiple-choice questions and calculation questions, and topics often integrated mechanics and electromagnetics, more difficult. In addition, this part of the knowledge often combined with mathematical knowledge, so the answer to such questions need to draw a trajectory map, combined with the geometric relationship to determine the radius of the circular motion, the center of the circle and exercise time.