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Q.

[[1]] of a material is defined as the resistance of a conductor made of that material of unit length and unit cross-sectional area.

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Detailed Solution

The resistivity of a material is defined as the resistance of a conductor made of that material of unit length and unit cross-sectional area.
Resistance,

R = ρ \frac{l}{A}

Resistivity is a property of the material and depends on temperature and pressure. The resistivity of conductors is low compared to the insulators' resistivity, where

ρ

is the resistivity of the material,

L = length of the cylinder and A = area

.
The conductor's resistance is influenced by its length and cross-sectional area.
According to measurements, a conductor's resistance is directly correlated with its length (

L

) and inversely correlated with its cross-sectional area (

A

).

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