3. A 200 m long aluminum wire has the same resistance and cross-sectionalarea as a carbon wire. What is the length of the carbon wire?4. A wire made of an unknown substance has a resistance of 125 m2. The wirehas a length of 1.8 m and a cross-sectional area of 2.35×10-5 m². What is theresistivity of the substance from which the wire is made? Give your answer inscientific notation to one decimal place

Answered: Image /qna-images/answer/62b5a4b9-1991-4e7a-a57f-b5602777a100.jpg

Answered: A 200 m long aluminum wire has the same…

A 200 m long aluminum wire has the same resistance and cross-sectional area as a carbon wire. What is the length of the carbon wire?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 70AP: A 10.00-meter long wire cable that is made of copper has a resistance of 0.051 ohms, (a) What is the...

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Question

3. A 200 m long aluminum wire has the same resistance and cross-sectional
area as a carbon wire. What is the length of the carbon wire?
4. A wire made of an unknown substance has a resistance of 125 m2. The wire
has a length of 1.8 m and a cross-sectional area of 2.35×10-5 m². What is the
resistivity of the substance from which the wire is made? Give your answer in
scientific notation to one decimal place

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