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(Solved): 5. A wire of diameter 1mm and conductivity 5107S/m has 1029 free electrons per cubic meter wh ...




5. A wire of diameter \( 1 \mathrm{~mm} \) and conductivity \( 5 \times 10^{7} \mathrm{~S} / \mathrm{m} \) has \( 10^{29} \)
5. A wire of diameter and conductivity has free electrons per cubic meter when an electric field of is applied. Determine: (a) The charge density of free electrons. (b) The current density


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The diameter of a wire is   
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