Answered: 1. What is the electric resistance of a…

1. What is the electric resistance of a silver wire 0.40 m long with a diameter of 1.5 mm? 2. What should be the radius of a 1.20m-long silver wire to have resistance of 0.32 Q?

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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II.
Direction: Solve the following problems. Write your answer with your solution on a separate sheet of paper.
1. What is the electric resistance of a silver wire 0.40 m long with a diameter of 1.5 mm?
2. What should be the radius of a 1.20m-long silver wire to have resistance of 0.32 Q?
3. What is the electric resistance of a copper wire 225 mm long with a radius of 0.85 mm?
4. An Iron rod's diameter is 9.00 mm and its resistivity at 20 ° C is 9.71x108 Q.m. How long must the rod be to offer
a resistance of 3.00 x 10³ Q?

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