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A 1.50-m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a constant potential difference of 15.0 V across its ends, while an ammeter measures the current through it. We observe that at room temperature (20.0°C) the ammeter reads 18.5 A, while 3. at 92.0°C it reads 17.2 A. We can ignore any thermal expansion of the rod. Find the resistivity at 20.0°C and a. b. the temperature coefficient of resistivity at 20.0°C for the material of the rod. 5. R=100 2, R2=200 2, R3=300 2. What is the total resistance if these resistors are connected in series? What is the resistance if these resistors are connected in parallel?

A 1.50-m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a constant potential difference of 15.0 V across its ends, while an ammeter measures the current through it. We observe that at room temperature (20.0°C) the ammeter reads 18.5 A, while 3. at 92.0°C it reads 17.2 A. We can ignore any thermal expansion of the rod. Find the resistivity at 20.0°C and a. b. the temperature coefficient of resistivity at 20.0°C for the material of the rod. 5. R=100 2, R2=200 2, R3=300 2. What is the total resistance if these resistors are connected in series? What is the resistance if these resistors are connected in parallel?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Please help answer Questions 3. and 5.
Pa 3. A 1.50-m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a constant potential difference of 15.0 V across its ends, while an ammeter measures the current through it. We observe that at room temperature (20.0°C) the ammeter reads 18.5 A, while at 92.0°C it reads 17.2 A. We can ignore any thermal expansion of the rod. Find the resistivity at 20.0°C and the temperature coefficient of resistivity at 20.0°C for the material of the rod. a. b. 5. R=100 2, R2=200 2, R3=300 N. What is the total resistance if these resistors are connected in series? What is the resistance if these resistors are connected in parallel? →)
Transcribed Image Text:Pa 3. A 1.50-m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a constant potential difference of 15.0 V across its ends, while an ammeter measures the current through it. We observe that at room temperature (20.0°C) the ammeter reads 18.5 A, while at 92.0°C it reads 17.2 A. We can ignore any thermal expansion of the rod. Find the resistivity at 20.0°C and the temperature coefficient of resistivity at 20.0°C for the material of the rod. a. b. 5. R=100 2, R2=200 2, R3=300 N. What is the total resistance if these resistors are connected in series? What is the resistance if these resistors are connected in parallel? →)
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