Two wires A and B with circular cross-section are made of the same metal and have equal lengths, but the resistance of wire A is four times greater than that of wire B. What isthe ratio of the cross-sectional area of A to that of B?(AA / AB)What is the ratio of the radius of A to that of B ?|(rA/ rB)

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Answered: Two wires A and B with circular…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 65PQ

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