Calculate the cross-sectional area, in mm, of a piece of copper wire, 40 m in length...
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Calculate the cross-sectional area, in mm², of a piece of copper wire, 40 m in length and having a resistance of 0.25 12. Take the resistivity of copper as 0.02 x 10 m. Calculate the cross-sectional area, in mm², of a piece of copper wire, 40 m in length and having a resistance of 0.25 12. Take the resistivity of copper as 0.02 x 10 m.
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