Question

What is meant by electrical resistivity of a material? Derive its S.I. unit.​

Answer 1

Answer:

The electrical resistivity is the electrical resistance per unit length and per unit of cross-sectional area at a specified temperature. The SI unit of electrical resistivity is the ohm⋅metre (Ω⋅m).

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Answer 2

Resistivity of a material gives the idea that it can able to resist or able to flow the electric current easily or not.

Si unit is Ohm-m

R= p×L/A

p=resistivity

p=R×A/L

= Ohm ×m^2/m

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