A length of wire has a radius of 300 times 10 -3 m and a, Ask an Expert

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A length of wire has a radius of 3.00 × 10 -3 m and a resistance of 0.200 ?. When the potential difference across the wire is 10.0 V, the electron drift speed is found to be 2.98 × 10 -4 m/s. On the basis of these data, calculate the density of free electrons in the wire.

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