A copper wire has a diameter of 0.5 mm and a resistivity of 1.68 x 10^-8 Ω-m. What will be the length of this wire be to make its resistance 2 ohm?

Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter5: Resistors
Section: Chapter Questions
Problem 2RQ: What is the advantage of a metal film resistor over a carbon resistor?
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A copper wire has a diameter of 0.5 mm and a resistivity of 1.68 x 10^-8 Ω-m. What will be the length of this wire be to make its resistance 2 ohm?   

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