感生电动势与动生电动势的关系讨论 ——以一道电磁感应习题的解答为例  

Discussion on the Relationship Between InducedElectromotive Force and Motional Electromotive Force-Taking the Solution on an Electromagnetic Induction Exercise as an Example

作　　者：吴萍 艾晶晶[1] WU Ping;Ai Jingjing(School of Mathematics&Physics,Qingdao University of Science and Technology,Qingdao,Shandong 266061)

机构地区：[1]青岛科技大学数理学院,山东青岛266061

出　　处：《物理通报》2025年第2期29-32,共4页Physics Bulletin

基　　金：青岛科技大学2022年教学改革研究专项项目.

摘　　要：对一道关于电磁感应的练习题目加以分析,发现当引起磁通量变化的两类因素同时存在时,系统总的感应电动势是动生电动势和感生电动势的叠加.从法拉第电磁感应定律出发,通过公式推导揭示了动生电动势和感生电动势之间相互独立互不影响的关系,阐明了一般教材中感生电动势的定义式是与回路运动与否无关的普遍关系式.By analyzing a practice problem about electromagnetic induction,it is found that the total induced electromotive force of the system is the superposition of the motion-induced electromotive force and the induced electromotive force,when two kinds reasons caused magnetic flux change existed simultaneously.Based on Faraday′s law of electromagnetic induction,formula derivation illustrates the independent relationship between motion-induced electromotive force and induced electromotive force,and further explained the definition on induced electromotive force in general textbooks is a universal relation and do not effected by the movement of loop.

关 键 词：电磁感应 感生电动势 动生电动势 

分 类 号：G63[文化科学—教育学]