Determine the Length of a Copper Wire That Has a Resistance

question 99

Multiple Choice

Determine the length of a copper wire that has a resistance of 0.172 $\varOmega$ and cross-sectional area of 7.85 × 10^-5 m². The resistivity of copper is 1.72 × 10^-8 $\varOmega$ . m.

• A)873 m
• B)250 m
• C)78.5 m
• D)785 m
• E)6570 m