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anonymous
 3 years ago
What would be the resistance of a piece of
aluminium wire 1.8 mm in diameter and 10 m long?(The resistivity of aluminium is 2.8 × 10–8 Ω m.)
anonymous
 3 years ago
What would be the resistance of a piece of aluminium wire 1.8 mm in diameter and 10 m long?(The resistivity of aluminium is 2.8 × 10–8 Ω m.)

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anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Yes so for A I did... π * ((0.9)^3)^2 and got 5.91 m^2

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0if you mean \(A=\pi\times(0.9\times10^{3})^2\), you're correct.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Oops now I realise why I've got the wrong answer... I forgot to add in the x10 bit :P Thank you
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