A BIG spool of copper wire has a resistance of 8 2 as measured from end of the wire to the other. If the wire has a diameter of 3.0 mm and if copper has a resistivity of 1.68x10-8 m, find the length of the wire in meters.
A BIG spool of copper wire has a resistance of 8 2 as measured from end of the wire to the other. If the wire has a diameter of 3.0 mm and if copper has a resistivity of 1.68x10-8 m, find the length of the wire in meters.
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 67PQ
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19 please need help, keep in mind the 7 basic units and watch the sig figs. Please write in standard form need to see all the numbers in solution thank you so much
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Concept
Given: Diameter of wire , Radius of wire , Resistivity of wire , Resistance of wire .
Required: Length of the wire .
Resistance of a wire of length L and area of cross section A is given by, , where is resistivity of wire.
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