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[" density in the wire."],[" Calculate t...

[" density in the wire."],[" Calculate the electric field in a copper wire of "],[" cross-sectional area 2.0"mm^(2)" carrying a current of "1A" ."],[" The resistivity of copper "=17times10^(-8)Omega m" ."],[" A wire has a length of "2.0m" and a resistance of "5.0Omega" ."]

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