5. Identify the color code for each of the following resistance values: (2 points each) a. 150 ± 10%: b. 5600 ±20%: c. 2000±5%: B. Problem Solving. The steps of solution of each problem should be shown clearly and completely

5. Identify the color code for each of the following resistance values: (2 points each) a. 150 ± 10%: b. 5600 ±20%: c. 2000±5%: B. Problem Solving. The steps of solution of each problem should be shown clearly and completely

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 27.5CQ: How does the resistance for copper and for silicon change with temperature? Why are the behaviors of...

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Question

5. Identify the color code for each of the following resistance values: (2 points each)
a. 150 ± 10%:
b. 5600 ±20%:
c. 2000±5%:
B. Problem Solving. The steps of solution of each problem should be shown clearly and completely

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When a straight wire is heated, its resistance changes according to the equation R = R0 [1 + (T T0)] (Eq. 17.7), where 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 R=R0[1+(TT0)][1+(TT0)][1+2(TT0)] where is the coefficient of linear expansion. (See Topic 10.) (b) Compare the two results for a 2.00-m-long copper wire of radius 0.100 mm, starting at 20.0C and heated to 100.0C.
When a straight wire is heated, its resistance changes according to the equation R = R0 [1 + (T T0)] (Eq. 17.7), where 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 R=R0[1+(TT0)][1+(TT0)][1+2(TT0)] where is the coefficient of linear expansion. (See Topic 10.) (b) Compare the two results for a 2.00-m-long copper wire of radius 0.100 mm, starting at 20.0C and heated to 100.0C.
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