A 200 m long wire with a square cross-section of 20 mm x 20, Physics

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A 200 m long wire with a square cross-section of 20 mm x 20

A 20.0 m long wire with a square cross-section of 2.0 mm x 2.0 mm is made of a resistive material. When a potential difference of 40V is placed across the length of the rod, a current of 2.0 A is produced. What is the value and units of the resistivity of the resistive material?

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Physics: A 200 m long wire with a square cross-section of 20 mm x 20

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