Question: Q. 13. When electrons drift in a metal from lower to higher potential, does it mean that all the free electrons of the metal are moving in the same direction?
R [Delhi I, II, III 2012]
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Solution:
Ans. When an electric field is applied, the net drift of electrons will be from lower to higher potential while local electrons tends to collide with ions resulting in change of direction. So, not all free electrons of metal will move in similar direction since drift velocity superpose only over random velocities of electrons.
[CBSE Marking Scheme 2012]
