A copper wire of length l and diameter d has potential difference V applied at its two ends. The drift velocity is V. If the diameter of wire is made d/4, then drift velocity becomes ___________(a) V/16(b) 16V(c) V(d) V/4The question was posed to me in my homework.I would like to ask this question from Ohm’s Law topic in chapter Circuit Elements and Kirchhoff’s Laws of Network Theory

A copper wire of length l and diameter d has potential difference V ap

1.	A copper wire of length l and diameter d has potential difference V applied at its two ends. The drift velocity is V. If the diameter of wire is made d/4, then drift velocity becomes ___________(a) V/16(b) 16V(c) V(d) V/4The question was posed to me in my homework.I would like to ask this question from Ohm’s Law topic in chapter Circuit Elements and Kirchhoff’s Laws of Network Theory
Answer» The correct CHOICE is (b) 16V The best explanation: Drift velocity is inversely PROPOTIONAL to area of MATERIAL i.e, V=I/nAq.

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