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Rohit
Questions (1)
5 geometric mean betweem 16 and 1/4
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Answers (2)
Given : Resistance R = 28Ω A is the cross-section area and, ρ is resistivity of the wire. To find length l A=π(0.00025) 2 ㎡=625π×10 −10 28=2.2×10 −7 So, l=28×625π×10 −3 /2.2=24.98=25m
It is 100 percent correct answer
