Question

state the law of resistance and derive unit for of resistivity​

Answer 1

Answer:

The unit of resistivity is ohm meter. We know that R = ρ L / A. Thus we can derive the expression for resistivity from this formula. ρ = R A / L, where R is the resistance in ohms, A is the area of cross-section in square meters and L is the length in meters.

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Answer 2

Answer:

The unit of resistivity is ohm meter. We know that R = ρ L / A.

Explanation:

Thus we can derive the expression for resistivity from this formula. ρ = R A / L, where R is the resistance in ohms, A is the area of cross-section in square meters and L is the length in meters.