Question

The area of cross section of a wire , if its length is 2m, its resistance is 23 ohm and the resistivity of the material is 46×10to the power-3 ohm mete​

Answer 1

Answer:

Explanation:

Hi friend,

The required answer is

resistance = (resistivity*length)/area

23 = (46*10^-3*2)/area

area = (92*10^-3)/23

area = (4*10^-3)/1

area = 4*10^-3

area = 0.4*10^-4 m^2

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