回路作一般运动时的磁通量变化率推导及其应用

doi:10.16854 /j.cnki.1000-0712.180177

College Physics ›› 2019, Vol. 38 ›› Issue (1): 17-.doi: 10.16854 /j.cnki.1000-0712.180177

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

LUO Chao-yi

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:2018-03-26 Revised:2018-06-23 Online:2019-01-20 Published:2019-02-27

Abstract

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

LUO Chao-yi. Derivation and application of variation rate of the magnetic flux in a loop with general motion[J].College Physics, 2019, 38(1): 17-.

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

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