how does the resistance of a wire depend upon its radius
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Resistance is depend on radius of wire.
Resistance of conductor is inversly proportional to area of cross section
Resistance of conductor is inversly proportional to area of cross section
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R = ρL/A = ρL / (πR²)
From above relation
Resistance ∝ 1/(Radius of wire)²
From above relation
Resistance ∝ 1/(Radius of wire)²
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