What is the difference between resistance and resistivity ?

AI Thread Summary
Resistance refers to the opposition to the flow of electric current in a material, which depends on the material's length and cross-sectional area. Resistivity, denoted by "rho," is an intrinsic property of the material that determines its ability to conduct electricity, remaining constant regardless of shape. The resistance of a specific shape can vary if the material's resistivity changes. Understanding these concepts is crucial for analyzing electrical circuits and materials. The discussion highlights the importance of both resistance and resistivity in determining electrical conductivity.
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What is the difference between resistance and resistivity ??

I have studied that the electric resistance is directly proportional to length of material and inversely proportional to area of cross section . In this resistivity becomes constant and determines conductivity by sign "rho" . What is it exactly ??
 
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It is the property of the material that will define the resistance once the shape is known.

If you make the same shape out of another material (with different rho) the resistance will be different.
 


Antiphon said:
It is the property of the material that will define the resistance once the shape is known.

If you make the same shape out of another material (with different rho) the resistance will be different.

That is more like it .

Please do add me and can you teach me about it more if you are free ??
 
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