when electrons drift in a metal from lower to higher potential .does it mean that all the free electros of the metal are moving in the same direction

Asked by krishna | 20th Feb, 2014, 12:48: PM

Expert Answer:

No, it doesn't mean that all the free electrons of the metal are moving in the same direction.
When a potential difference is applied across a metal, the electrons gets accelerated towards the positive potential. The velocity of electrons increases but it happens so only for a short time. It is because of the fact that the electron experiences a random forces due to vibrating ions in the metal. Therefore, the electron may get deflected or scattered in a wide range of directions due to the action of random forces.

Answered by  | 21st Feb, 2014, 02:23: PM

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