A 1.50 m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a constant potential difference of 15.0V across its ends, while an ammeter measures the current through it. You observed that at room temperature ( 20° C ) the ammeter reads 18. 5 A, while at 92.0° C' it reads 17.2 A. a). Which of the following is its resistivity at 20° C?(p). [Select] v in N-m.

A 1.50 m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a constant potential difference of 15.0V across its ends, while an ammeter measures the current through it. You observed that at room temperature ( 20° C ) the ammeter reads 18. 5 A, while at 92.0° C' it reads 17.2 A. a). Which of the following is its resistivity at 20° C?(p). [Select] v in N-m.

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Current And Resistance

Section: Chapter Questions

Problem 27.11OQ: Two conducting wires A and B of the same length and radius are connected across the same potential...

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