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College Physics 10th Edition by Raymond Serway,Chris Vuille
Edition 10ISBN: 978-1285737041College Physics 10th Edition by Raymond Serway,Chris Vuille
Edition 10ISBN: 978-1285737041 Exercise 31
When a straight wire is heated, its resistance changes according to the equation 
(Eq. 17.7), where a is the temperature coefficient of resistivity. (a) Show that a more precise result, which includes the length and area of a wire change when it is heated, is
where is the coefficient of linear expansion. (See Chapter 10.) (b) Compare the two results for a 2.00-m-long copper wire of radius 0.100 mm, starting at 20.0°C and heated to 100.0°C.
(Eq. 17.7), where a is the temperature coefficient of resistivity. (a) Show that a more precise result, which includes the length and area of a wire change when it is heated, is
where is the coefficient of linear expansion. (See Chapter 10.) (b) Compare the two results for a 2.00-m-long copper wire of radius 0.100 mm, starting at 20.0°C and heated to 100.0°C.
Explanation
Verified
Verified
(a)
Use the following expressions to fin...
College Physics 10th Edition by Raymond Serway,Chris Vuille
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