Suppose you wish to fabricate a uniform circular wire (imagine a long solid cylinder) from a mass m of a metal with density pm and electrical resistivity p. If the wire is to have a resistance of R and all the metal mass m is to be used, what must be (a) the length and (b) the diameter of this wire? Use the following parameters: • Total mass m = 0.00720 kg Pm • Mass density = 9.00 x 10³ kg/m³ • Electrical resistivity p = 1.60 x 10-8 N.m Total resistance R = 2.00 2.
Suppose you wish to fabricate a uniform circular wire (imagine a long solid cylinder) from a mass m of a metal with density pm and electrical resistivity p. If the wire is to have a resistance of R and all the metal mass m is to be used, what must be (a) the length and (b) the diameter of this wire? Use the following parameters: • Total mass m = 0.00720 kg Pm • Mass density = 9.00 x 10³ kg/m³ • Electrical resistivity p = 1.60 x 10-8 N.m Total resistance R = 2.00 2.
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 69PQ
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