The Resistivity of Copper at 20ºC Is 1 $\times$ 10^-8 $\Omega$ · MYou Have Copper Wire Whose Diameter Is 2

question 16

Multiple Choice

The resistivity of copper at 20ºC is 1.7 $\times$ 10^-8 $\Omega$ · m.You have copper wire whose diameter is 2.00 mm and need a resistance of 1.00 $\Omega$ .How long would a piece of this wire need to be to provide this resistance?

• A)19.6 m
• B)49.1 m
• C)185 m
• D)317 m
• E)542 m

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Definitions:

Chemical Elements

Substances consisting of atoms which have the same number of protons in their atomic nuclei, representing the simplest forms of matter that cannot be broken down using chemical reactions.

Weathering

The process by which rocks and minerals break down into smaller particles through physical or chemical means.

Gentle Slope

A terrain feature with a relatively mild incline, often found in hills, plains, and other landforms, facilitating easier movement and agriculture.

Steep Slope

A terrain with a high gradient or incline, often leading to rapid runoff of water and increased erosion risks.