17). Find the change in resistance for a copper wire when it is heated from room temperature (20° C) to 650° C. The wire is cylindrical (r 0.8 mm) and is 85 m long. Find the change in power across this wire for the two values of resistance if the potential difference across the wire is 12 V.

17). Find the change in resistance for a copper wire when it is heated from room temperature (20° C) to 650° C. The wire is cylindrical (r 0.8 mm) and is 85 m long. Find the change in power across this wire for the two values of resistance if the potential difference across the wire is 12 V.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 74AP: A wire with a resistance of 5.0 is drawn out through a die so that its new Length is twice times...

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17). Find the change in resistance for a copper wire when it is heated from room temperature (20° C) to 650° C.
The wire is cylindrical (r 0.8 mm) and is 85 m long. Find the change in power across this wire for the two
values of resistance if the potential difference across the wire is 12 V.

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