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(a) Using the data in Table 12.1, compute the resistance of a copper wire 1mm (0.039 in.) in diameter and 6m (236 in.) long. (b) What would be the current flow if the potential drop across the ends of the wire is 0.02V ? A (c) What is the current density? A/m2 (d) What is the magnitude of the electric field across the ends of the wire? V/m \begin{tabular}{lc} \hline Metal & Electrical Conductivity [(m)1] \\ \hline Silver & 6.8107 \\ \hline Copper & 6.0107 \\ \hline Gold & 4.3107 \\ \hline Aluminum & 3.8107 \\ \hline Brass (70Cu30Zn) & 1.6107 \\ \hline Iron & 1.0107 \\ \hline Platinum & 0.94107 \\ \hline Plain carbon steel & 0.6107 \\ \hline Stainless steel & 0.2107 \\ \hline \end{tabular}