Question

What is electrical resistivity of a material ? State its unit and define it.​

Answer 1

The resistivity of a substance is the resistance of a cube of that substance having edges of unit length, with the understanding that the current flows normal to opposite faces and is distributed uniformly over them.

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). It is commonly represented by the Greek letter ρ, rho

Explanation:

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Answer 2

◾ Resistivity means the resistance which acts when election flows though a conducting material. due to such resistance the energy of election get converted into heat energy as a result loss of energy take place.

◾ The SI unit of Resistivity is ohm.

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