the no of density of free electrons in (cu) conductor is 8.5×10^28 /m^3 . how long does an electron take to drift from one end of a wire 3m long to its other end ? the area of cross section of wire is 2×10^-6 m^2 and it is carrying for 3A .
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the time taken by an electron to drift from one end of the wire to the other is 2.7 × 104 s.
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