4. There are 8.4 x 1022 free electrons per cm in copper. The current in the wire is 0.21 A (e = 1.6 x 10-19 C). Then the drifts velocity of electrons in a copper wire of 1 mm2 cross section, will be:-

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4. There are 8.4 x 1022 free electrons per cm in copper. The current in the wire is 0.21 A (e = 1.6 x 10-19 C). Then the drifts velocity of electrons in a copper wire of 1 mm2 cross section, will be:-

4. There are 8.4 x 1022 free electrons per cm in copper. The current in the wire is 0.21 A (e = 1.6 x 10-19 C). Then the drifts velocity of electrons in a copper wire of 1 mm2 cross section, will be:-

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