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 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/4

The 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

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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 ___________

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