A wire whose circular cross section is not uniform carries a current I. Relative to the larger region, the drift velocity in the narrower region is
A) larger.
B) smaller.
C) the same.

Question

Quizplus · Accepted Answer

The drift velocity is inversely proportional to the cross-sectional area of the wire. In the narrower region, the cross-sectional area is smaller, leading to a larger drift velocity compared to the larger region.

A Wire Whose Circular Cross Section Is Not Uniform Carries