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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.... | |