A Wire (Length = 2

question 30

Multiple Choice

A wire (length = 2.0 m, diameter = 1.0 mm) has a resistance of 0.45Ω. What is the resistivity of the material used to make the wire?

• A) 5.6 × 10−⁷ Ω ⋅ m
• B) 1.2 × 10−⁷ Ω ⋅ m
• C) 1.8 × 10−⁷ Ω ⋅ m
• D) 2.3 × 10−⁷ Ω ⋅ m
• E) 7.1 × 10−⁷ Ω ⋅ m

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