1.

What is the diameter of the wire if its length is 2m, the resistivity of the material of the wire is Ohm-m and its resistance is 46 ohm?

Answer»

ey ╚»★«╝Length of The Wire ( l ) = 2mResistance of The Wire ( R ) = 23∩ RESISTIVITY of The Wire = 1.84 X 10^6 ∩mLet the Area of Cross SECTION of the Wire be A.R = P  l / AA = P  l / R1.84 X 10^6 X 2 / 23⇒ 184 X 10^8⇒ 8 X 10^8∴ Area of Cross Section of The Wire = 8 X 10^8m²



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