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3. The free charge density in copper is 1.81 x 100 C/m. For a current density of 6 x 10* A/m2, find the electric

3. The free charge density in copper is 1.81 x 100 C/m. For a current density of 6 x 10* A/m2, find the electric field intensity and the drift velocity. The conductivity of copper, a 5.8 x 10 S/m

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