Current Attempt in ProgressHigh-voltage power lines are a familiar sight throughout the country. The aluminum (resistivity = 2.82 x 10-8 m) wire used for some ofthese lines has a cross-sectional area of 7.3 x 104 m². What is the resistance of 9.4 kilometers of this wire?Number iUnits

Given: The resistivity of the aluminum is 2.82x10-8 Ohm.m. The cross-sectional area is 7.3x10-4 m2.…

Current Attempt in Progress High-voltage power lines are a familiar sight throughout the country. The aluminum (resistivity = 2.82 x 10-80 m) wire used for some of these lines has a cross-sectional area of 7.3 x 104 m². What is the resistance of 9.4 kilometers of this wire? Number i Units

Current Attempt in Progress High-voltage power lines are a familiar sight throughout the country. The aluminum (resistivity = 2.82 x 10-80 m) wire used for some of these lines has a cross-sectional area of 7.3 x 104 m². What is the resistance of 9.4 kilometers of this wire? Number i Units

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter17: Current And Resistance

Section: Chapter Questions

Problem 17P: A potential difference of 12 V is found to produce a current of 0.40 A in a 3.2-m length of wire...

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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.

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Current Attempt in Progress
High-voltage power lines are a familiar sight throughout the country. The aluminum (resistivity = 2.82 x 10-8 m) wire used for some of
these lines has a cross-sectional area of 7.3 x 104 m². What is the resistance of 9.4 kilometers of this wire?
Number i
Units

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