Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Metal, Temperature and Resistance
Name:  Roland B.
Status:  other
Age:  40s
Location: N/A
Country: N/A
Date: 2000-2001


Question:
Is there a metal (alloy) that has a non-linear temperature coefficient in its electrical conductivity i.e. at elevated temperatures has significantly higher resistance?


Replies:
I think there are. Please look up electrical resistivity of metals and alloys in the set of references by Tolukian (I think they are called "Hand book of thermophysical properties." This should be available at major engineering school libraries.

AK

Ali Khounsary, Ph.D.
Advanced Photon Source
Argonne National Laboratory


The electrical resistance of most metals that I am aware of DOES increase with temperature; however, the change in resistance is not very dramatic. I believe that the resistivity of semi-conductors is much more temperature dependent.

Vince Calder


Roland -

I seem to recall that all metals increase electrical resistance with increased temperature. Whether it is non-linear or not, I do not know, but I believe nichrome (sp?) at least has a very steep slope on its graph of temp vs. resistance. Try the Handbook of Chemistry and Physics for real numbers.

Hope this lead helps.

Larry Krengel



Click here to return to the Physics Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory