How does resistance relate to conductivity?

1 Answer
Aritra G.
May 30, 2015

Resistance #R# of a wire is given by :

#R = rho*l/A# where #l# is the length of the wire and #A#, its area of cross section.

#rho# is a constant for the given material at a particular temperature. It is called to resistivity or specific resistance of the material.

The conductivity (#sigma#) is defined as,

#sigma = 1/rho #

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