Calculate the resistance of an aluminium wire 2.0 m long and 1.0 mm in diameter

PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity

Problem

Calculate the resistance of an aluminium wire 2.0 m long and 1.0 mm in diameter. (Resistivity of aluminium ρ=2.7×10−8 Ω m\rho = 2.7\times10^{-8}\,\Omega\,\text{m}) (a) 0.7 Ω0.7\,\Omega (b) 0.07 Ω0.07\,\Omega (c) 0.017 Ω0.017\,\Omega (d) 7 Ω7\,\Omega

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