24. A piece of wire of uniform cross section has a resistance of 0.90. If the length of the wire is doubledand its area of cross section is increased four times, what is the resistance? The temperaturevariation of resistance may be neglected.

Answered: s area of cross section is increased…

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s area of cross section is increased four times, what is the resistar on of resistance may be neglected.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 36PE: A copper wire has a resistance of 0.500at 20.0°C, and an iron wire has a resistance of 0.525at the...

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Concept explainers

Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.

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24. A piece of wire of uniform cross section has a resistance of 0.90. If the length of the wire is doubled
and its area of cross section is increased four times, what is the resistance? The temperature
variation of resistance may be neglected.

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