A piece of wire of resistance 
is bent through 
at its mid-point and the two halves are twisted together, then the resistance is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
For twisted wire, there are two halves each of resistance 
in parallel.
So, 
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…