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Consider a wire made of copper with conductivity 6.0 × 10' 2m', which has a circular cross-section of radius 0.47 mm. In a particular
circuit, this wire carries a current of 6.5 A.
What is the electric field, in volts per meter, inside this wire?
E =
If we replace this wire with a gold one of the same size, with conductivity 4.1 × 107 2-1'm1, what will the electric field in the wire be?
E =

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