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On Faraday's law in the presence of extended conductors

Authors :
Luis Bilbao
Source :
American Journal of Physics. 86:422-429
Publication Year :
2018
Publisher :
American Association of Physics Teachers (AAPT), 2018.

Abstract

The use of Faraday's Law of induction for calculating the induced currents in an extended conducting body is discussed. In a general case with arbitrary geometry, the solution to the problem of a moving metal object in the presence of a magnetic field is difficult and implies solving Maxwell's equations in a time-dependent situation. In many cases, including cases with good conductors (but not superconductors) Ampere's Law can be neglected and a simpler solution based solely in Faraday's law can be obtained. The integral form of Faraday's Law along any loop in the conducting body is equivalent to a Kirkhhoff's voltage law of a circuit. Therefore, a numerical solution can be obtained by solving a linear system of equations corresponding to a discrete number of loops in the body.

Details

ISSN :
19432909 and 00029505
Volume :
86
Database :
OpenAIRE
Journal :
American Journal of Physics
Accession number :
edsair.doi...........47a0bee2bf82f23d8167fbdc70a40a0d
Full Text :
https://doi.org/10.1119/1.5034445