A wire has a non-uniform cross-section as shown in figure.A steady current flows through it. The drift speed of electrons at points $P$ and $q$ is $v_P$ and $v_Q$.
Medium
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The drift speed of electrons is inversely proportional to the radius of cross section. Thus here the cross sectional area at point $P$ is smaller than the cross sectional area at point $Q$. Hence, the drift velocity is large for smaller area and small for larger area. The drift speed will relate as per the relation given below
$v_{P}>v_{Q}$
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