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Two cylindrical wires are made of the same material and
Chapter 21, Problem 11P(choose chapter or problem)
QUESTION:
Problem 11P
Two cylindrical wires are made of the same material and have the same length. If wire B is to have nine times the resistance of wire A, what must be the ratio of their radii, rB/rA?
Questions & Answers
QUESTION:
Problem 11P
Two cylindrical wires are made of the same material and have the same length. If wire B is to have nine times the resistance of wire A, what must be the ratio of their radii, rB/rA?
ANSWER:
Step 1 of 3
Here we need to find the ratio of the radii of two wires.
Two identical cylindrical wires A and B of same material and length but the wire B has nine times the resistance of wire A.
Let and be the resistances of wire A and B respectively. In the given problem, it is given to be that .