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25-01-2024
Physics

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Calculate the resistivity of the material of a wire 1 m long , 0.4 mm in diameter and having a resistance 2Ω.
a. 300 Ωm
b. 2.514 x 10⁻⁷ Ωm
c. 2x10⁷ Ωm
d. 1x10⁻¹⁵ Ωm

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