Question

name the factors on which resistivity of a condutor depends​

Answer 1

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Your answer is
Resistivity of a conducter is depend on its
1. Thickness
2. Length

Answer 2

Answer:

Hello there !

Explanation:

First of all Let us know about resistivity:

☞Resistivity :

It is the ratio of the intensity of the electric field E at any point within the conductor and the current-density j at that point is called 'specific resistance' or ' electric resistivity' of the conductor and is represented by ρ(rho).

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Now , Factors affecting Resistivity:

[ As, we know that Resistivity is directly proportional to the total Resistance.]

Therefore.:

(✪ Area of cross- section:

☞ Since, Resistance R is inversely proportional to the Area of cross-section, thus we conclude that Resistivity is inversely proportional to the Area of cross-section.

(✪ Length:

☞ Resistance R of a conductor is inversely proportional to the Length , But Resistivity being a property of material is independent to the Length.

(✪ Nature of Material:

☞ Resistivity depends on the nature of material of which it is made .

For Ex.: Resistivity of a (same length and area of cross section) copper wire is less than a nichrome wire .

(✪. Temperature:

☞Within the Range of 500K most of the conductors ( specially metals) Resistivity increases with increase in temperature.

Hope it helps!

Thank you!