Literaturnachweis - Detailanzeige
Autor/inn/en | Galili, I.; Goihbarg, E. |
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Titel | Energy transfer in electrical circuits: A qualitative account. |
Quelle | In: American journal of physics, 73 (2005) 2, S. 141-144
PDF als Volltext |
Sprache | englisch |
Dokumenttyp | online; gedruckt; Zeitschriftenaufsatz |
ISSN | 0002-9505; 1943-2909 |
DOI | 10.1119/1.1819932 |
Schlagwörter | Elektrische Ladung; Elektrodynamik; Energiestrom; Oberfläche; Oberflächenspannung; Physikunterricht; Stromkreis |
Abstract | We demonstrate that the use of the Poynting vector for a model of the surface charge of a current carrying conductor can help qualitatively explain the transfer of energy in a dc closed circuit. The application of the surface charge model to a simple circuit shows that electromagnetic energy flows from both terminals of the battery, mainly in the vicinity of the wires - and not inside them! to the load where it enters and is converted into heat at a rate obtained from Ohm's law. © 2005 American Association of Physics Teachers. |
Erfasst von | Arbeitsgruppe Didaktik der Physik, Universität Osnabrück |
Update | 2005/3 |