In this part of the experiment, you will investigate the physical parameters that have an effect on the resistance of a conductor. The conductors to be used are given as in the following. Brass (0.00203 cm") Brass (0.00519 cm³) Brass (0.00811 cm³) Brass (0.0127 cm') Copper (0.00811 cm³) Aluminum (0.00811 cm³) Stainless Steel (0.00811 cm³) Nichrome (0.00811 cm') Part C: Resistance vs Resistivity (p) In this part resistance of five different material wires with same diameter and length are to be measured and compared. (I = 1A with the exception of (I = 0.54) for Nichrome) Table 3. Resistance of conductor for different resistivity D (cm) A(cm) Length (cm) 1 (A) Voltage |(mV) 337 5,3 TA Res. (2) Pm) Brass Copper Aluminum Stainless Steel 0,1016 Nichrome 0,00811 0,00811 0,00811 0,1016 24 0,1016 24 0,1016 24 0,00811 24 332 0,1016 0,00811 24 122, ? 0,5 Question: How did the resistance of the conductor change with respect to cross-sectional area? Did the change occur as you have expected? Explain how you performed the calculation of resistivity. Your Answer: Task (Plot): Plot Resistance vs Resistivity (p) graph (Independent variable p on x axis, dependent variable R on y axis)

In this part of the experiment, you will investigate the physical parameters that have an effect on the resistance of a conductor. The conductors to be used are given as in the following. Brass (0.00203 cm") Brass (0.00519 cm³) Brass (0.00811 cm³) Brass (0.0127 cm') Copper (0.00811 cm³) Aluminum (0.00811 cm³) Stainless Steel (0.00811 cm³) Nichrome (0.00811 cm') Part C: Resistance vs Resistivity (p) In this part resistance of five different material wires with same diameter and length are to be measured and compared. (I = 1A with the exception of (I = 0.54) for Nichrome) Table 3. Resistance of conductor for different resistivity D (cm) A(cm) Length (cm) 1 (A) Voltage |(mV) 337 5,3 TA Res. (2) Pm) Brass Copper Aluminum Stainless Steel 0,1016 Nichrome 0,00811 0,00811 0,00811 0,1016 24 0,1016 24 0,1016 24 0,00811 24 332 0,1016 0,00811 24 122, ? 0,5 Question: How did the resistance of the conductor change with respect to cross-sectional area? Did the change occur as you have expected? Explain how you performed the calculation of resistivity. Your Answer: Task (Plot): Plot Resistance vs Resistivity (p) graph (Independent variable p on x axis, dependent variable R on y axis)

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 69PQ

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