As temperature of a conductor increases why does the ratio of

[phymatter]

as temperature of a conductor increases why does the ratio of conductivity to resistivity increase ?

 

[sophiecentaur]

1. How are the two quantities related?
2. Are you sure this applies to ALL conductors?

 

[Bill_K]

This is a really tough question! I suggest you post it in the Solid State forum.

 

[epenguin]

This ratio varies as the square of the conductivity.

On the other hand the product is constant. I know a person who has verified this experimentally. The data was very impressive - a straight line went exactly through all the experimental points in the R against 1/C plot - you don't often see data like that and he was very proud of this. Science is all about experiment after all. (It wasn't conductivity actually but something similar.)

 

[sophiecentaur]

Isn't it just a matter of definition? Conductance is the inverse of resistance and there is a whole 'upside down' set of all the quantities we are more familiar with. Some problems are much easier to solve by choosing the appropriate set to use.

 

[solas99]

Resistivity from relaxation time

Given the following data on copper, how do i calculate the resistivity?

Relaxation time: 2.50e10-14s
Density: 8940Kgm-3
molar mass: 63.5g

is there an equation for it.