two wires of the same material and same length have radii r1 and r2 respectively.Compare:1)their resistance,2) their resistivities.plz answer with step
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R= ρ l / a
R1=ρ l/ Π r₁²
R2 = ρ l / Πr₂²
R1r₁² =R2 r₂²
R1/ R2 = r₂² / r₁²
as resitivity is inverse of resistance then we can inverse the equation too .
R1=ρ l/ Π r₁²
R2 = ρ l / Πr₂²
R1r₁² =R2 r₂²
R1/ R2 = r₂² / r₁²
as resitivity is inverse of resistance then we can inverse the equation too .
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