Calculate the electric field in a copper wire of cross-sectional area 2mm^2 carrying a current of 2 ampere; given that resistivity of copper wire is 1.7×10^-8 ohm m.

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Calculate the electric field in a copper wire of cross-sectional are 2.0 $m m^{2}$ carrying a current of 1 A. The resistivity of copper = 1.7 $\times 10^{- 8} Ω m .$

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