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Calculate the resistance of aluminium wire of length 10m area of cross section is 2*10^-9 and the resistivity 2.63*10^-8 |
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Answer» d=10km=10×10 3 meterd=2.0mm⇒ radius r = 1 mm = 1×10 −3 meter.⇒ cross sectional AREA A=πr 2 =π×10 −6 m 2 So resistance R= APL =2.7×10 −8 × π×10 −6 10 4 Ω⇒R=85.98Ω |
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