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A stainless steel wire is 3mm in diameter and 1m in length. The resistivity of steel is 70

Answer» IND the AREA of cross SECTION of wire by using formula πr square.given , diameter= 3mm=0.3 mradius =0.3/2marea of cross section =22×0.3/2 ×0.3/2 = 99/200 m square .by using formula of resistivity,=R×A/ lengthI hope you can SOLVE it....


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