Q145. An electric cell of e.m.f E, is connected across a copper wire of diameter d and length L. The drift velocity of electrons in the wire is v0. If the length of the wire is changed to 2L, the new drift velocity of electrons in the copper wire will be:Physics — NUST Mock 2 — Question 145 of 200A. V B. 2V C. V/2 D. V/4 Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →