A current I is flowing through the wire of diameter d having drift velocity of electrons v d in it. What will be new drift velocity when diameter of wire is made 
?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Current, 
If diameter of wire is 
, then area will be 
, so new drift velocity 
.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
Two cylindrical rods of uniform cross-section area A and 2 A, having free electrons per unit volume…
A copper wire is connected across an ideal battery. The drift velocity of the electrons is v. If an…
The dimensional formula of mobility is
A current flows in a wire of circular cross-section with the free electrons travelling with a mean …
A wire has a non-uniform cross-sectional area, as shown in the figure. A steady current i flows thr…
A uniform copper wire carries a current i amperes and has q charge carriers percubic meter. The len…