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Description
Faraday's Law states that the voltage induced in a closed loop is equal to the rate of change of magnetic flux through that loop. As we know, when there is no fluctuating magnetic flux, there is no voltage difference across a closed loop. But when there is a changing magnetic field, a voltage is induced within a closed loop known as the electromotive force or the EMF. There are two types of electromotive forces: the motional EMF and the transformer EMF. In motional EMF the magnetic field is kept steady while the loop is moved such that it cuts the magnetic field varying the total magnetic flux through the coil, similar to a dynamo. In transformer EMF, the loop or the coil is kept stationary while an alternating current is run through the coils to generating a time-varying magnetic field. The Faraday's Law has the most number of applications out of all Maxwell's Equations. The applications of the Faraday's Law include, induction cooking, wireless power transfer, metal detectors, electromagnetic breaks and all forms of eddy current applications. The eddy currents are current loops formed on metalic surfaces when exposed to a time-varying magnetic field. In the following video Dr. Maxworth explains the Faraday's Law and and the point form of Maxwell's equations. Then you may proceed to the worksheets on mutually coupled transmission lines and wireless power transfer.
ISBN
978-3-031-73784-8 Published: 23 October 2024
Publication Date
1-2025
Keywords
Faraday's Law, electromotive force, EMF
Disciplines
Electrical and Electronics | Engineering | Engineering Education
Recommended Citation
Maxworth, Ashanthi PhD, "Maxwell's Third Equation: the Faraday's Law" (2025). EM Fields With Prof. Maxworth. 2.
https://digitalcommons.usm.maine.edu/oer_engineering_maxworth_emfields/2
Comments
This chapter is a review chapter. Hence you may put all three files inside the coordinate systems folder here.