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Which equation represents the temperature dependence of resistivity in a metallic conductor?

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Q-00085286

ρ = ρ0 [1 + α(T - T0)]

ρ = ρ0 / (1 + α(T - T0))

ρ = ρ0 + α(T - T0)

ρ = ρ0 * α(T - T0)

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