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Show that drift velocity of electrons in a conductor is given by u = J/(ne) where J is the current density, n is the number of mobile electrons per unit volume and e is the charge carried by each electron. Calculate the same in a copper wire of radius of 0.6mm when a current of 1A flows through it assuming that one mobile electron is available from one atom of copper. Atomic weight of copper = 63.55, density of copper = 8930 kgm^(-3), Avogadro number = 6.01 xx 10^(26)Kg mol^(-1) and e = 1.6 xx 10^(-19)C |
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