高中物理3-2中变压器一节是交变电流的延续,是电磁感应的应用,也是电磁学的综合.其构造自然是闭合的铁芯连接不相连的的闭合线圈而成,原理是线圈间的互感作用,核心关系式遵守法拉第电磁感应定律、欧姆定律以及焦耳定律等等.这部分的习题层出多变,但处处没有脱离上述核心,下面给出清楚地解题思路. High School Physics 3-2 in the transformer section is the continuation of the alternating current is the application of electromagnetic induction, but also the synthesis of electromagnetism.Its structure is naturally closed closed-core connection is not connected coil, the principle is between the coil , The core relationship obeys Faraday’s Law of Electromagnetic Induction, Ohm’s Law and Joule’s Law, etc. This part of the exercises is varied but everywhere without departing from the above core, the clear solution to the problem is given below.