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Resistance Resistivity
The electrical resistance of an object is a measure of its opposition to the flow of electric current.
Resistivity is the characteristic property of the material by which it resists the amount of curren t through it.
It depends upon the
length ,
area of cross-section
and nature of the material of the given material,
and physical conditions like temperature
It only depends upon the
nature of the material
and physical conditions like temperature.
Its SI unit is ohm (Ω) Its SI unit is ohm meter. (Ω-m)
It is denoted by R . It is denoted by ρ (rho)
Formula for Resistance is
R = V/I,
or R = ρ(L/A)
where V = Voltage, I = Current, ρ = Resistivity
Formula for Resistivity is 
ρ = (R×A)/L

where R = Resistance, L= Length, A = Cross-sectional area
Resistance depends on dimensions of the material, like length, area of cross-section

Resistivity is independent of the dimensions of material

 

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CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Economics, Accounting and English at Teachoo