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1.A wire of length I, area of cross-section A and material of resistivity p is cut into tow parts inthe ratio 1:3 of the length. Find the ratio of their (i) resistivity and (ii) resistance.121 |
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Answer» Resistivity is inversely proportional to lengthhence it's ratio will be 3:1Resistance is directly proportional to length hence it's ratio will be 1:3 |
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