基础实验试题A:线圈耦合效率的研究  

Fundamental test A:Research on the inductive coupling efficiency

作　　者：陈羽 唐强[1,2] 蔡志岗 CHEN Yu;TANG Qiang;CAI Zhigang(School of Physics,Sun Yat-sen University,Guangzhou 510275,China;National Demonstration Center for Experimental Physics Education(Sun Yat-sen University),Sun Yat-sen University,Guangzhou 510275,China)

机构地区：[1]中山大学物理学院,广东广州510275 [2]中山大学物理学国家级实验教学示范中心(中山大学),广东广州510275

出　　处：《物理实验》2024年第5期22-28,34,共8页Physics Experimentation

摘　　要：介绍了第9届全国大学生物理实验竞赛基础实验试题A的实验内容,给出了参考解答并分析了学生作答情况.基础实验试题A为电磁学题目,试题包含正弦信号典型参量与功率的测量、未知元件的判别、线圈电流的非接触测量、耦合损耗分析与效率优化4个部分.试题在大学物理实验中交流信号基本参量测量的基础上,重点考查学生对示波器等常见电学仪器的使用、常见电学元件特性的掌握、正弦信号与简谐运动的分析和对电磁感应物理图像的理解与综合应用能力.The experiment content,solution and students’performance of the fundamental test A of the 9th Chinese Undergraduate Physics Experiment Competition were given,the tipic of which was about electromagnetism,consisting of 4 sections:measurement on the typical parameters and power of sinusoidal signals,identification of unknown components,the non-contact measurement on the coil current,and the analysis of coupling loss and the optimization of the efficiency.Base on the conventional experiment project of measurements on the basic parameters in AC signals which has been conducted in the college physics experiment courses,the test was designed to comprehensively examine the students’ability to use general electrical instruments especially the oscilloscopes,to understand the properties of basic electrical components,to analysis the sinusoidal signals and simple harmonic motions,as well as the ability to understand the concept of electromagnetic induction and to use it solving practical problems.

关 键 词：电磁感应 正弦信号 复振幅 耦合效率 

分 类 号：O441.3[理学—电磁学]