# Factors on which conductivity depends

1. Dec 3, 2012

### logearav

1. The problem statement, all variables and given/known data

The conductivity of a material depends on a) Resistance(R) b) Area of cross section(A) c) Length(L)
d) Resistivity(ρ)

2. Relevant equations

3. The attempt at a solution
The formula for Resistivity is given by ρ = AR/L and Conductivity(σ) being the reciprocal of Resistivity, the formula is σ = L/AR.
So, i think the answer is d) Resistivity since that term is missing in the given equation of conductivity. Am i inferring correct?
But at the same time, i also think in this way,i.e., if there is more resistance there wont be much conduction and less resistance means more conduction. So Conductivity also depends on Resistance.
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Dec 4, 2012

### Basic_Physics

I would think that the way resistivity is defined it only depends on the resistance of the material since as per definition of resitivity it is the resistance of 1 meter of the material with a uniform unit cross sectional area.