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[" Example "3.15" A copper wire has a re...

[" Example "3.15" A copper wire has a resistance of "10Omega" and an "],[" area of cross-section "1mm^(2)" .A potential difference of "10V],[" exists across the wire.Calculate the drift speed of electrons,if "],[" the number of electrons per cubic metre in copper is "8times10^(28)],[" electrons."]

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