A particular application requires a 20-m length of aluminum wire to have a 0.25-m resistance at 20

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A particular application requires a 20-m length of aluminum wire to have a 0.25-mΩ resistance at 20 oC.
(a) What is the wire’s diameter?
(b) What would its resistance be if its length was halved and it was then placed in an ice water bath?

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College Physics

ISBN: 978-0321601834

7th edition

Authors: Jerry D. Wilson, Anthony J. Buffa, Bo Lou

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Question Posted: Aug 29, 2015 05:23 AM

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A particular application requires a 20-m length of aluminum wire to have a 0.25-m resistance at 20

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