Ohm’s law for a wire in contact with a thermal reservoir

Autor:	M. J. Madsen
Rok vydání:	2009
Předmět:	Physics Ohm's law Thermal reservoir Physics::Physics Education General Physics and Astronomy Mechanics law.invention Nonlinear system symbols.namesake law Electrical resistivity and conductivity Heat transfer symbols Ohm Resistor Voltage
Zdroj:	American Journal of Physics. 77:516-519
ISSN:	1943-2909 0002-9505
DOI:	10.1119/1.3097778
Popis:	Ohm’s law is one of the key empirical relations taught in introductory courses on electricity. Students often do a straightforward experiment to measure the current through a resistor as a function of voltage. These experiments typically yield a linear relation between the current and the voltage using carbon film resistors. However, the same measurements on long lengths of conducting wire (such as common wire resistivity kits) typically have a clear nonlinear component. The nonlinear behavior can be modeled using simple principles of heat transfer with a thermal reservoir. Experimental results are shown to agree well with this simple model.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7cdfc716778ba764016829cd0fae9a47 https://doi.org/10.1119/1.3097778 Zobrazit plný text záznamu