Publication Date
1-1-2024
Document Type
Article
Publication Title
European Journal of Physics
Volume
45
Issue
1
DOI
10.1088/1361-6404/ad0a9e
Abstract
This paper was inspired by a recent publication by Redžíc (2018 Eur. J. Phys. 39 025205) which threw into bold relief the differences between the way Maxwell viewed the current and the way Lorentz visualized it. We make the assumption that for a circuit of laboratory dimensions current (and charge perturbation effects in general) can be assumed to propagate instantaneously around the loop. Our second fundamental assumption is the commonly accepted one that E is the force per unit charge on a stationary charge. We use these facts to make the usual definition of electromotive force more rigorous and to derive the Lorentz force formula.
Keywords
EMF, Faraday’s law, Lorentz force
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Department
Electrical Engineering
Recommended Citation
Art Davis. "EMF revisited" European Journal of Physics (2024). https://doi.org/10.1088/1361-6404/ad0a9e
