The average time of motion of electrons between two successive collisions with fixed positive ions inside a conductor is called the ___ time

active

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relaxation

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collision time

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none of these

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Solution

The correct option is B relaxation
That’s just the definition. The average time of motion of electrons between two successive collisions with fixed positive ions inside a conductor is called the relaxation time. I don’t know why they call it the relaxation time. Maybe because this is time when the electrons are “relaxed” as in not colliding.

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