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[" A current of "5" Apasses through a "],[" copper conductor (resistivity "],[=1.7times10^(-8)Omega-m" ) of radius of "],[" cross-section "5mm" .Find the "],[" mobility of the charges,if their drift "],[" velocity is "1.1times10^(-3)m/s],[" (A) "1.5m^(2)/V-s],[" (B) "1.3m^(2)/V-s],[" (C) "1.0m^(2)/V-s],[" (D) "1.8m^(2)/V-s]

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