交变电流相对于直流,有更多的应用,这使得交变电流与生产生活有着比直流电更广泛和密切的联系.与交变电流有关的内容,在近几年高考试题中呈现逐年增加的趋势.其中正弦(余弦)交变电流的产生方法又是其中重要的考查点.下面就对近几年的高考试题中与交变电流的形成有关的题目进行分类解析,以期达到掌握交变电流的命题特点及趋势的目的,为备战高考提供一些帮助.一、磁场不变,线圈绕垂直于磁场方向的轴做匀速转动 The alternating current has more applications than the direct current, which makes the alternating current has more extensive and close relation with the production and life than the direct current. The content related to alternating current has been increasing year by year Trend of which sine (cosine) alternating current generation method is one of the important test points below the entrance exam questions in recent years and the formation of alternating current subject classification analysis, in order to achieve the mastery of alternating current Proposition characteristics and the purpose of the trend, to prepare for college entrance examination to provide some help. First, the same magnetic field, the coil around the axis perpendicular to the magnetic field to do uniform rotation