The resistivity of a metal increases slightly with increased temperature. This can be expressed as p=P[1+a(T-To)], where To is a reference temperature, usually 20°C, and ax is the temperature coefficient of resistivity. Submit ✓ Correct Part B For copper, a = 3.9×10-3°C ¹.Suppose 2.5-m-long, 0.40-mm-diameter copper wire is connected across the terminals of a 1.5 V ideal battery. What is the current in the wire at 20°C? Express your answer with the appropriate units. I= Submit Part C Previous Answers dt Submit HA Value Request Answer What is the rate, in A/C, at which the current changes with temperature as the wire heats up? VE ΑΣΦ Units Request Answer ? QMIC ? A/°C
The resistivity of a metal increases slightly with increased temperature. This can be expressed as p=P[1+a(T-To)], where To is a reference temperature, usually 20°C, and ax is the temperature coefficient of resistivity. Submit ✓ Correct Part B For copper, a = 3.9×10-3°C ¹.Suppose 2.5-m-long, 0.40-mm-diameter copper wire is connected across the terminals of a 1.5 V ideal battery. What is the current in the wire at 20°C? Express your answer with the appropriate units. I= Submit Part C Previous Answers dt Submit HA Value Request Answer What is the rate, in A/C, at which the current changes with temperature as the wire heats up? VE ΑΣΦ Units Request Answer ? QMIC ? A/°C
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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![The resistivity of a metal increases slightly with increased
temperature. This can be expressed as
P= P₁1+a(T-To)], where To is a reference
temperature, usually 20°C, and is the temperature
coefficient of resistivity.
▼
Submit Previous Answers
✓ Correct
Part B
For copper, a = 3.9x10-3°C ¹Suppose 2.5-m-long, 0.40-mm-diameter copper wire is connected across the terminals of a 1.5 V
ideal battery. What is the current in the wire at 20°C?
Express your answer with the appropriate units.
I=
Part C
HA
Submit Request Answer
Value
Submit
What is the rate, in A/°C, at which the current changes with temperature as the wire heats up?
[Π| ΑΣΦ
Units
Request Answer
?
?
A/°C](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc7fe5a73-45e4-4166-8ba1-50e355550dfc%2Ff4ba09f7-89b5-4198-bcbe-0f89fd1e5987%2Fuix9kfj_processed.png&w=3840&q=75)
Transcribed Image Text:The resistivity of a metal increases slightly with increased
temperature. This can be expressed as
P= P₁1+a(T-To)], where To is a reference
temperature, usually 20°C, and is the temperature
coefficient of resistivity.
▼
Submit Previous Answers
✓ Correct
Part B
For copper, a = 3.9x10-3°C ¹Suppose 2.5-m-long, 0.40-mm-diameter copper wire is connected across the terminals of a 1.5 V
ideal battery. What is the current in the wire at 20°C?
Express your answer with the appropriate units.
I=
Part C
HA
Submit Request Answer
Value
Submit
What is the rate, in A/°C, at which the current changes with temperature as the wire heats up?
[Π| ΑΣΦ
Units
Request Answer
?
?
A/°C
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