回路作一般运动时的磁通量变化率推导及其应用

骆超艺

doi:10.16854 /j.cnki.1000-0712.180177

大学物理 >

2019 , Vol. 38 >Issue 1: 17

DOI: https://doi.org/10.16854 /j.cnki.1000-0712.180177

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回路作一般运动时的磁通量变化率推导及其应用

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厦门理工学院光电与通信工程学院电子工程系福建省光电技术与器件重点实验室，福建厦门 361024

骆超艺( 1980—) ，男，福建厦门人，厦门理工学院电子工程系讲师，硕士，主要从事电磁场理论及应用

收稿日期: 2018-03-26

修回日期: 2018-06-23

网络出版日期: 2019-02-27

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Derivation and application of variation rate of the magnetic flux in a loop with general motion

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School of Opto-electronic and Communication Engineering，Fujian Key Laboratory of Opto-electronic Technology and Devices，Xiamen University of Technology，Xiamen，Fujian 361024，China

Received date: 2018-03-26

Revised date: 2018-06-23

Online published: 2019-02-27

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摘要

推导了刚性回路同时作平动和转动的情况下，回路面的磁通量变化率公式，从较普遍的情况证明，由电磁感应定律

和由洛伦兹力得到的动生电动势相等.并将公式应用于载流回路和感应电流所受的磁力( 矩) 分析，为电磁学基本问题的研究

提供理论依据.

关键词： 磁通量; 电磁感应; 动生电动势; 磁场力; 磁力矩

本文引用格式

骆超艺 . 回路作一般运动时的磁通量变化率推导及其应用[J]. 大学物理, 2019 , 38(1) : 17 . DOI: 10.16854 /j.cnki.1000-0712.180177

Abstract

This paper deduces the variation rate of the magnetic flux in a rigid loop with translational and rotational motion. It is proved that motional electromotive force obtained by the law of electromagnetic induction is equal to that obtained by the Lorentz force. The formula is applied to analyze magnetic force and torque on current-carrying loop and induced current. The result has provided theoretical foundation for the study of basic problems about electromagnetism.

Key words： magnetic flux; electromagnetic induction; motional electromotive force; magnetic force; magnetic torque

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