Aluminium is used to make long-distance power lines because it has a low resistivity and is relatively cheap. The resistivity of aluminium is 2.82 10–8 Ω m. What is the resistance (in Ω) per kilometre of aluminium line having a cross sectional area of 1.5 cm2 ?

Aluminium is used to make long-distance power lines because it has a low resistivity and is relatively cheap. The resistivity of aluminium is 2.82 10–8 Ω m. What is the resistance (in Ω) per kilometre of aluminium line having a cross sectional area of 1.5 cm2 ?

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Question

Aluminium is used to make long-distance power lines because it has a low resistivity and is relatively cheap. The resistivity of aluminium is 2.82 10^–8Ω m. What is the resistance (in Ω) per kilometre of aluminium line having a cross sectional area of 1.5 cm²?

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