JEE PHYSICS MCQ: CURRENT ELECTRICITY

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Statement-1: If the radius of copper wire carrying a current is doubled, then the drift velocity of the electrons will become one fourth.
Statement-2: Drift velocity will change according to the relation,

I=n e A v_{{d}}

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Correct option: A

Statement-1 is true, Statement-2 is true, Statement-2 is the correct explanation for Statement-1

Statement-1 is true and Statement-2 is true, and Statement-2 is the correct explanation for Statement-1 because drift velocity is inversely proportional to the area, hence proportional to the square of the radius.

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