Equation icon  Resistivity / Conductivity

Use this resource: Use this resource icon
Link to this page: http://core.materials.ac.uk/search/detail.php?id=3192
View at:            
Resource type: Equation
Description: Material property describing how well a material can conduct electricity. Materials with high resistivity (low conductivity) are known as insulators. Materials with low resistivity are conductors. This is generally a good indication of a material's ability to conduct heat, also. Can be effected by environmental (thermodynamic) factors.

TeX format: \rho = {1\over\sigma} = R{A\over L}

ρ {\rho} = Resistivity (&Ohm;m) {\Omega m}
σ {\sigma} = Conductivity (Sm-1) {\Omega_{-1}}
R {R} = Resistance (Ω) {\Omega}
A {A} = Cross-sectional area (m2) {m^2}
L {L} = Length of sample (m) {m}
Ne {N_e} = Density of free electrons (m-3) {m^{-3}}
e {e} = Electron charge (C) {C}
μe {/mu_e} = Electron mobility (m2V-1s-1) {m^2V^{-1}s^{-1}}
Keywords: resistivity • conductivity • electrical • material properties • current • electron mobility • charge
Categories: Science approaches
Science approaches > Structure, bonding & defects > Atomic structure
Applications > Electronics
Product Forms > Long > Wire
Properties > Electrical, magnetic & optical > Conductivity
Properties > Electrical, magnetic & optical > Resistivity
Created by: The University of Liverpool
License: This resource is released under the Creative Commons Attribution license (2.0 UK: England & Wales).
Creative Commons Attribution logo
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
View the full legal code here.
Date created: 08 July 2010
Date added: 04 August 2010
Resource ID: 3192