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] in N-m. b). Which of the following is the temperature coefficient of resistivity at 20° C for the material of the rod? ( Select] v in °C-1
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] in N-m. b). Which of the following is the temperature coefficient of resistivity at 20° C for the material of the rod? ( Select] v in °C-1
Chapter9: Current And Resistance
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Problem 89CP: Consider a resistor made from a hollow cylinder of carbon as shown below. The inner radius of the...
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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 15.0V 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 ]
in N-m.
b). Which of the following is the temperature coefficient of resistivity at 20° C for the
material of the rod? [ Select ]
in °C-1](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F81c708dd-fc8c-4257-8642-e4a4f54c9bda%2F36066418-ae2f-4765-a371-6870116c699b%2F0n7cd05_processed.png&w=3840&q=75)
Transcribed Image Text: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 ]
in N-m.
b). Which of the following is the temperature coefficient of resistivity at 20° C for the
material of the rod? [ Select ]
in °C-1
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