define the terms (i) drift velocity, (ii) relaxation time. a conductor of length l is connected to a dc source of emf . if this conductor is replaced by another conductor of same material and same area of cross-section but of length 3l, how will the drift velocity change?
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(1 ). Drift velocity - The average velocity gained by an electron in the opposite direction of electric field is called drift velocity.
( 2). Relaxation time - The time interval between two successive collisions is called relaxation time.
( 2). Relaxation time - The time interval between two successive collisions is called relaxation time.
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