A wire made of aluminium having resistivity \rho=2.8\times10^{-8}\Omegam with a circular cross section and has a radius of 2\times10^{-3}m. A current of 5 A flows through the wire. If the voltage difference between the ends is 1 V, what is the length of the wire in meters

KEAM 2018 Physics and Chemistry Paper

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A wire made of aluminium having resistivity ρ=2.8×10−8Ωm with a circular cross section and has a radius of 2×10−3m. A current of 5 A flows through the wire. If the voltage difference between the ends is 1 V, what is the length of the wire in meters

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