Question

aluminium wire has radius 0.25 mm and length of 75 m. if the resistance of the wire is 10 ohm. calculate the resistivity of aluminum​

Answer 1

Here is your answer mate...

Answer 2

Answer:

Resistivity = (R x A)/length

Radius = 0.25mm = 0.00025 m

length = 75m

Resistance = 10 ohms

Area of cross section = πr^2

= 22/7 x 0.00025 x 0.00025

Resistivity =

(10 x 22/7 x 0.00025 x 0.00025 ) ÷ 75

= (220/7 x 0.00025 x 0.00025)/75

= 2.63 x 10 to the power (-8) ohmmeter

HOPE THIS HELPS YOU

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