Current Electricity

Question: In a wire of circular cross-section with radius r, free electrons travel with a drift velocity V when a current I flows through the wire. What is the current in another wire of half the radius and of the same material when the drift velocity is 2V



1) 2I
2) I
3) $I/2$
4) $I/4$
Solution: Explanation: No Explanation
Electric Conduction Ohm's Law Resistance

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