An aluminum bar 3.90 m long has a rectangular cross section 1.26 cm by 5.35 cm...

Question

Question

An aluminum bar 3.90 m long has a rectangular cross section 1.26 cm by 5.35 cm .

Part A) What is its resistance? I got R= 1.52*10^-4 Ω

Part B) What is the length of a copper wire 1.45 mm in diameter having the same resistance? L= ? m

Answer 1

Answer #1

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Answer 2

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