论文部分内容阅读
高三物理复习中,怎样做到省时高效,是我们必须要研究的课题,笔者通过多年的高三物理复习,觉得在复习中,“一题多变,一题多问”不但提高复习的效率,而且能提高学生的知识的迁移能力和思维的应变能力.一、一题多问,提高思维的灵活性例1如图1(甲)所示,两平行金属板间接有如图1(乙)所示的随时间t变化的电压U,板长L=0.4 m,板间距离d=0.4 m,在金属板右侧有一边界为MN的匀强磁场,磁感应强度B=5×10-3T,方向
In physics review, how to do time-saving and efficient, is that we must study the subject, the author through years of high school physics review, I think in the review, “a question changeable, a question and more ” not only improve the review Efficiency, but also to improve the students ability to transfer knowledge and ability to respond to changes in the first, a question asked to improve the flexibility of thinking Example 1 As shown in Figure 1 (A), the two parallel plates indirectly as shown in Figure 1 ), The plateau length L = 0.4 m, the distance d between the plates = 0.4 m, a uniform magnetic field with a boundary MN at the right side of the metal plate, the magnetic induction B = 5 × 10 -3 T ,direction