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When no current is passed through a conductor

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the free electrons do not move

the average speed of a free electron over a large period of time is zero

the average velocity of a free electron over a large period of time is zero

the average of the velocities of all the free electrons at an instant is zero

answer is C, D.

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Detailed Solution

In the absence of external electric field , motions of free electrons in a conductor are completely at random.

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