Q. 34.3( 9 Votes )

Write the SI unit

Answer :

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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