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1. A conductor has a cylindrical shape with a diameter d. Its resistance is 2 Ω. It is recast into a cylindrical conductor of diameter 0.3d. The resistance of new conductor is likely to be





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  • By: guest on 02 Jun 2017 01.07 am
    Since new diameter is 0.3 d, the new area of cross-section a (0.3 d)2. The volume remains the same. Therefore length increase by a factor . Hence .
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