摘要
介绍了一种测量载流导体磁场的新方法。该方法利用新型弱磁传感器,直接给出磁场值,克服了现在不能测量载流直导体的磁场和只能采用间接方法测量导体圆环磁场的不足。给出了实验原理、实验方法和载流圆环导体和载流直导体激发的磁场的实验结果,与理论计算相符。该方法操作简单,现象直观。还可以测量地磁场、磁导率和手机的电磁辐射,能提高学生的实验兴趣,启发学生的创新思维。
A new method for measuring the magnetic field of the current-carrying conductor is introduced.By using a new type of weak magnetic sensor,the magnetic field value is presented directly,which overcomes the shortcomings of not measuring the magnetic field of the current-carrying direct conductor at present and only using indirect method to measure the magnetic field of the conductor ring.The experimental principle,method and results of magnetic field excitation by the current-carrying circular conductor and current-carrying straight conductor are given,which is in agreement with the theoretical calculation.This method is simple and intuitive.It can also measure the geomagnetic field,permeability and electromagnetic radiation of mobile phones,improve students’interest in experiments and inspire innovative thinking.
作者
余剑敏
钟健松
孙光厚
魏健宁
孙晶华
YU Jianmin;ZHONG Jiansong;SUN Guanghou;WEI Jianning;SUN Jinghua(College of Science,Jiujiang University,Jiujiang 332005,China;Jiangxi Provincal Key Laboratory of Microstructure Functional Materials,Jiujiang 332005,China;College of Science,Harbin Engineering University,Harbin 150001,China)
出处
《实验技术与管理》
CAS
北大核心
2019年第12期49-51,共3页
Experimental Technology and Management
基金
黑龙江省高等学校物理实验教学研究项目（01-201601-51）
中央高校基本科研专项资金项目（HEUCFM151103）
关键词
载流导体
磁场
毕奥-萨伐尔定律
载流圆环
载流直导体
current-carrying conductor
magnetic field
Biot-Savart’s law
current-carrying circular
current-carrying straight conductor
