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sedighn
Group Title
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.)
 2 years ago
 2 years ago
sedighn Group Title
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.)
 2 years ago
 2 years ago

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imron07 Group TitleBest ResponseYou've already chosen the best response.1
\[R=\rho L/A\]
 2 years ago

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

sedighn Group TitleBest ResponseYou've already chosen the best response.0
Is that correct? :o
 2 years ago

imron07 Group TitleBest ResponseYou've already chosen the best response.1
if you mean \(A=\pi\times(0.9\times10^{3})^2\), you're correct.
 2 years ago

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