SI Unit of resistivity is ohm meter.
Explanation.
We know that,
R = ρ (l/A)
Therefore,
ρ = R (A/l)
= ohm × m 2 /m
= ohm × m
Therefore, unit of rho is ohm meter.
Note: Unit of R is ohm, Unit of area of cross-section is m 2 , unit of length is m
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