When a Thin Copper Wire That Is 178 M Long

question 123

Short Answer

When a thin copper wire that is 178 m long is connected between a 1.2-V potential difference, a current of 2.0 amps flows through the wire. What is the diameter of this wire? The resistivity of copper is 1.72 × 10^-8 Ω ∙ m.

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