The potential difference across a given copper wire is doubled. what happens to the drift velocity of the charge carriers?
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Expert's answer
2013-06-21T10:18:19-0400
Drift velocity depends on average kinetic energy of electronas v = sqrt(2E/m) If we double potential difference, the average energy willalso double, as E=q*U, where U is potential difference. Hence, drift velocity will change in sqrt(2*2E/m)/sqrt(2E/2) = sqrt(2) times.
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