Q. 34.3( 9 Votes )
Write the SI unit
SI unit of resistivity is ohm meter.
As we know
Here ρ is resistivity, R is resistance, l is length, A is the cross-sectional area.
Here unit of resistance is ohm, cross-section area unit is m2; length unit is m.
ρ = ohm.m
So the unit of ρ is ohm.m.
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