Questions
A current i flows in a wire of circular cross-section with the free electrons travelling with a drift velocity v. The drift velocity of electron when a current 2 i flows in another wire of twice the radius and of the same material is
detailed solution
Correct option is A
The drift velocity is given byVd=ineA=VAgain vd′=2ine(4A)=12ineA=V2Similar Questions
A potential difference is applied across the ends of a metallic wire. If the potential difference doubled, the drift velocity
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