State which one of the following situations are possible and give an example for each of these an object with a constant
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a uniform 2 wire of mass 2.23×10 kg carries a current 1 ampere when 1.7 volt is applied across it. calculate its length and area of crosssection .if the wire uniform straight to double its length the new resistance density of copper is 8.92× 10000kg/m
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