Electromagnetic induction and damping - quantitative experiments using PC interface
物理教育
2009-11-07 v1
摘要
A bar magnet, attached to an oscillating system, passes through a coil periodically, generating a series of emf pulses. A novel method is described for the quantitative verification of Faraday's law which eliminates all errors associated with angular measurements, thereby revealing delicate features of the underlying mechanics. When electromagnetic damping is activated by short-circuiting the coil, a distinctly linear decay of oscillation amplitude is surprisingly observed. A quantitative analysis reveals an interesting interplay of the electromagnetic and mechanical time scales.
引用
@article{arxiv.physics/0111016,
title = {Electromagnetic induction and damping - quantitative experiments using PC interface},
author = {Avinash Singh and Y. N. Mohapatra and Satyendra Kumar},
journal= {arXiv preprint arXiv:physics/0111016},
year = {2009}
}
备注
4 pages, to appear in Am. J. Phys