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On Faraday's law in the presence of extended conductors
- 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.
- Subjects :
- Physics
Superconductivity
05 social sciences
050301 education
General Physics and Astronomy
System of linear equations
01 natural sciences
law.invention
Magnetic field
Loop (topology)
law
0103 physical sciences
010306 general physics
Ampere
Faraday cage
0503 education
Electrical conductor
Voltage
Subjects
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