2. The resistance of a certain conductor , 300 mil diameter and 20 ft long is 200 x10^-3 N. Calculateits resistivity in micro-ohms (µ-2).3. Determine the thermal coefficient of resistance of copper at 50°C, then use this value to

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Answered: 2. The resistance of a certain…

2. The resistance of a certain conductor , 300 mil diameter and 20 ft long is 200 x10^-3 n. Calculate its resistivity in micro-ohms (u-2).

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Current And Resistance

Section: Chapter Questions

Problem 27.5CQ: How does the resistance for copper and for silicon change with temperature? Why are the behaviors of...

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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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2. The resistance of a certain conductor , 300 mil diameter and 20 ft long is 200 x10^-3 N. Calculate
its resistivity in micro-ohms (µ-2).
3. Determine the thermal coefficient of resistance of copper at 50°C, then use this value to

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