which of the following characteristics of electrons determines the current in a conductor?
1. drift velocity alone
2. thermal velocity alone
3. both drift velocity and thermal velocity
4. neither drift nor thermal velocity

Asked by vipuljain1964 | 5th May, 2015, 05:53: PM

Expert Answer:

Correct option is: (1)

The characteristic of an electron that determines the current in a conductor is drift velocity alone and not thermal velocity.
Drift velocity is the average velocity with which the free electrons get drifted towards the positive end of the conductor under the influence of an external electric field.
On the other hand thermal velocity of electron depends upon the temperature.
 
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Answered by Jyothi Nair | 6th May, 2015, 12:28: PM