The cross-sectional area of a wire of the same length, Electrical Engineering

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Some wire of cross-sectional area 1mm2 has a resistance of 20Ω. Determine:

a)  The resistance of a wire of the same length and material if the cross-sectional area is 4 mm2.

b)  The cross-sectional area of a wire of the same length and material if the resistance is 32Ω. 

 


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