Consider a copper wire with a lenght of 3 00 m at20 C. It has a1.20-m-long section with diametor1.40 mm and a1.80-m long secion with diameter070 mm There is a current of 2 8 mAn the1.40-mm-diameter section (for copor p-1.72x10Pom)PartFind tExpre Part AFind the current in the 0.70-mm-diameter section?Express your answer In millamperes.mASubmitRequest AnswerPart BCalculate the potential difference betwen te ends of he 3 00 m length of wire?Express your answer in volts.4.

Given: l = 3 m; T = 20 C; d = 1.20m;

Consider a copper wire with a lenght of 3 00 m at 20 C. It has a1.20-m-long section with diameter 1.40mm and a 1.60 m long section withdiameter 0.70 mm There is a current.of.2.8mA n the 1.40-mm-diamoter section. (for coporp-1.72x10 P0m)

Consider a copper wire with a lenght of 3 00 m at 20 C. It has a1.20-m-long section with diameter 1.40mm and a 1.60 m long section withdiameter 0.70 mm There is a current.of.2.8mA n the 1.40-mm-diamoter section. (for coporp-1.72x10 P0m)

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 65PQ

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Question

Consider a copper wire with a lenght of 3 00 m at
20 C. It has a1.20-m-long section with diametor
1.40 mm and a1.80-m long secion with diameter
070 mm There is a current of 2 8 mAn the
1.40-mm-diameter section (for copor p-1.72x10
Pom)
Part
Find t
Expre

Part A
Find the current in the 0.70-mm-diameter section?
Express your answer In millamperes.
mA
Submit
Request Answer
Part B
Calculate the potential difference betwen te ends of he 3 00 m length of wire?
Express your answer in volts.
4.

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