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磁场是中学电学知识的重要组成部分,存近几年的高考中,对磁场知识的考查频率高、覆盖面广、难度大.同学们在学习这部分知识时,遇到的重点和难点是磁场对电流或运动电荷的作用.由于高考的命题指导思想已把对能力的考查放在首位,因而在试题的选材、条件设置等方面都会有新的变化,将本单元知识与社会生活、生产实际和科学技术相联系的试题将会越来越多.这样的试题不仅可以考查同学们对多学科知识的综合运用,更是对同学们实际应用知识能力的考查.下面我们将磁场对电流的作用考查分类解析,以供同学们探讨.
Magnetic field is an important part of the secondary school knowledge, in recent years, college entrance examination, knowledge of the magnetic field test frequency, wide coverage, difficult.When students learn this part of the knowledge, the focus and difficulty encountered is the magnetic field Current or movement charge.As the college entrance examination guidelines have put the test of ability in the first place, and therefore in the test material selection, conditions setting will have new changes, the unit of knowledge and social life, the actual production and Science and technology will be more and more questions.This test can not only examine the students on the comprehensive use of multidisciplinary knowledge, but also on the practical application of knowledge and ability of students to test below we will test the role of the magnetic field on the current Classification analysis, for students to explore.