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Define the term 'drift velocity' of charge carriers in a conductor.Obtain the expression for the current density in terms of relaxation time. OR Define relaxation time of the free electrons drifting in a conductor.How is it related to the drift velocity of free electrons?
Drift velocity is defined as the average velocity attained by the particles (electrons) of a given material due to an electric field that is proportional to current. Ohm’s law can be expressed in terms of drift velocity as follows:
Definition of drift noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
19 senses: 1. to be carried along by or as if by currents of air or water or (of a current) to carry (a vessel, etc) along 2..... Click for more definitions.
DRIFT meaning: 1 : a slow and gradual movement or change from one place, condition, etc., to another; 2 : a large pile of snow or sand that has been blown by the wind The Britannica Dictionary mobile search
move slowly; 1 [intransitive] (+ adv./prep.) to move along smoothly and slowly in water or air Clouds drifted across the sky. The empty boat drifted out to sea. A cool breeze drifted through the open window.
The earliest known use of the noun drift is in the Middle English period (1150—1500). OED's earliest evidence for drift is from before 1400, in Cursor Mundi: a Northumbrian poem of the 14th century.
