A piece of copper is to be shaped into a conducting wire of maximum resistance. The suitable length and diameter are and respectively.
Text Solution
Verified by ExpertsThe correct answer is:
B
We know that,
If the length of wire is increases, then the radius of wire is decreases.
To get the maximum resistance the suitable length and diameter are 2L and 
.
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
A battery of emf and internal resistance is connected to a resistor. The current in the circuit i…
The electron drift speed is small and the charge of the electron is also small but still, we obtain…
In the circuit shown, the value of I in ampere is
A lamp is to be operated on a 120 V D.C. line. For proper glow, a resistor of ohm should be connec…
A battery consists of a variable number (n) of identical cells, each having an internal resistance …
A current of enters one corner of an equilateral triangle having 3 wires of resistances each an…