Question

Select the best answer for items 1 through 10 to make each statement true, and place the letter for the answer in the space provided. The resistance of a copper conductor is inversely proportional to the ___________________ a. CSA. b. gauge numbers. c. surrounding temperature. d. current through the conductor. e. length.

   Select the best answer for items 1 through 10 to make each statement true, and place the letter for the answer in the space provided.
The resistance of a copper conductor is inversely proportional to the ___________________
a. CSA.
b. gauge numbers.
c. surrounding temperature.
d. current through the conductor.
e. length.

Electricity 1: Devices, Circuits and Materials

Thomas Kubala 9th Edition

Chapter 8, Problem 1

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Resistance (R) is a measure of how much a material opposes the flow of electric current. Show more…

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Select the best answer for items 1 through 10 to make each statement true, and place the letter for the answer in the space provided. The resistance of a copper conductor is inversely proportional to the ___________________ a. CSA. b. gauge numbers. c. surrounding temperature. d. current through the conductor. e. length.

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Key Concepts

Electrical Resistance

This concept refers to the opposition that a material offers to the passage of electric current. It is influenced by both the material’s intrinsic properties, such as resistivity, and its geometry, including length and cross-sectional area.

Resistivity

Resistivity is a fundamental property of a material that quantifies how strongly the material opposes current flow. It remains constant for a given material, so variations in electrical resistance are due to changes in the conductor’s dimensions rather than the material itself.

Cross-Sectional Area (CSA)

CSA is the area of the conductor's cross-section through which current flows. It is directly related to the number of charge carriers available for conduction; thus, a larger cross-sectional area reduces resistance according to the relationship R = ?L/A, making electrical resistance inversely proportional to CSA.

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