A copper wire 85 m long must experience a voltage drop of less than 1.2 V when a current of 1.7 A passes through it. Using the data in Table 1, calculate the minimum diameter (in mm to 2 decimal places) of the wire that can be used. Table 1: Room-Temperature Electrical Conductivities for Nine Common Metals and Alloys Metal Silver Copper Gold Aluminium Brass (70Cu-30Zn) Iron Platinum Plain carbon steel Electrical Conductivity ((. m)-1 6.8 x 107 6.0 x 107 4.3 x 107 3.8 x 107 1.6 x 107 1.0 x 107 0.94 x 107 0.6 x 107

A copper wire 85 m long must experience a voltage drop of less than 1.2 V when a current of 1.7 A passes through it. Using the data in Table 1, calculate the minimum diameter (in mm to 2 decimal places) of the wire that can be used. Table 1: Room-Temperature Electrical Conductivities for Nine Common Metals and Alloys Metal Silver Copper Gold Aluminium Brass (70Cu-30Zn) Iron Platinum Plain carbon steel Electrical Conductivity ((. m)-1 6.8 x 107 6.0 x 107 4.3 x 107 3.8 x 107 1.6 x 107 1.0 x 107 0.94 x 107 0.6 x 107

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

100%

A copper wire 85 m long must experience a voltage drop of less than 1.2 V when a
current of 1.7 A passes through it. Using the data in Table 1, calculate the minimum
diameter (in mm to 2 decimal places) of the wire that can be used.
Table 1: Room-Temperature Electrical Conductivities for Nine Common Metals and Alloys
Metal
Silver
Copper
Gold
Aluminium
Brass (70Cu-30Zn)
Iron
Platinum
Plain carbon steel
Stainless steel
Electrical Conductivity [(02.
m)-1
6.8 x 107
6.0 x 107
4.3 x 107
3.8 x 107
1.6 x 107
1.0 x 107
0.94 x 107
0.6 x 107
0.2 x 107

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