A certain wire has a resistance of R. The resistance of another wire identical with the first except for having thrice its radius is?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter13: Heating Control Devices
Section: Chapter Questions
Problem 28RQ
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A certain wire has a resistance of R. The resistance of another wire identical with the first except for having thrice its radius is?

 

*Draw a diagram if possible

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