Задача 30567.

The average electron drift velocity in a copper wire is 74 μm / s. Determine the potential difference at the ends of the wire with a length of L = 5 m. The specific conductivity of copper is 5.9 * 10 ^ 7 (Ohm * m) ^ - 1, and the concentration of conduction electrons in it is 10 ^ 29 m ^ 3.

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