A conductor has a circular cross-sectional area A, length L, andLresistivity p, as shown.ASuppose you want to double the resistance of the conductor. Would thefollowing changes achieve this goal?i)YesNoReplace the conductor with one made from a materialwith half the resistivity, keeping everything else thesame:ii)Replace the conductor with one made from a materialwith half the conductivity, keeping everything elsethe same:YesNoDouble the length of the conductor, keepingeverything else the same:iii)YesNoDouble the radius of the conductor, keepingeverything else the same:iv)YesNoYesReduce the radius of the conductor by half, keepingeverything else the same:v)No

When we know the length and the cross-sectional area of a conductor, the electrical resistance of a…

Answered: double the resistance of

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double the resistance of

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 68PQ

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Question

100%

A conductor has a circular cross-sectional area A, length L, and
L
resistivity p, as shown.
A
Suppose you want to double the resistance of the conductor. Would the
following changes achieve this goal?
i)
Yes
No
Replace the conductor with one made from a material
with half the resistivity, keeping everything else the
same:
ii)
Replace the conductor with one made from a material
with half the conductivity, keeping everything else
the same:
Yes
No
Double the length of the conductor, keeping
everything else the same:
iii)
Yes
No
Double the radius of the conductor, keeping
everything else the same:
iv)
Yes
No
Yes
Reduce the radius of the conductor by half, keeping
everything else the same:
v)
No

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