ne characteristics of five wires are given in the table. Wire Material Length Gauge A iron 2.0 m # 22 copper 2.0 m #22 C copper 2.0 m #18 D copper 1.0 m #18 E iron 2.0 m #18 The gauge is a measure of the diameter of the wire; and #18 corresponds to a diameter of 1.2 10-8 m; and #22 corresponds to a diameter of 6.4 x 10-4 m. The resistivity of iron is 9.7 x 10- 1.m; and the value for copper is 1.72 x 10-8Q m. Of the five wires, which one has the smallest resistance?
ne characteristics of five wires are given in the table. Wire Material Length Gauge A iron 2.0 m # 22 copper 2.0 m #22 C copper 2.0 m #18 D copper 1.0 m #18 E iron 2.0 m #18 The gauge is a measure of the diameter of the wire; and #18 corresponds to a diameter of 1.2 10-8 m; and #22 corresponds to a diameter of 6.4 x 10-4 m. The resistivity of iron is 9.7 x 10- 1.m; and the value for copper is 1.72 x 10-8Q m. Of the five wires, which one has the smallest resistance?
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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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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Transcribed Image Text:The characteristics of five wires are given in the table.
Wire
Material
Length
Gauge
A
iron
2.0 m
#22
copper
2.0 m
#22
C
copper
2.0 m
#18
сopper
1.0 m
#18
E
iron
2.0 m
#18
The gauge is a measure of the diameter of the wire; and #18 corresponds to a diameter of 1.2
x 10-3 m; and #22 corresponds to a diameter of 6.4 x 10-4 m. The resistivity of iron is 9.7 x 10-
8Q. m; and the value for copper is 1.72 x 10-8Q. m.
Of the five wires, which one has the smallest resistance?
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