Physics, asked by raniamahek, 6 months ago

A copper wire is stretched to make it 0.2% of its original length. What is the percentage change in its resistivity?
0 2.0%
0.4 %
O No change
04.0%

Answers

Answered by manisimha1

1

Answer:

What is the percentage change in its resistance? Where k=(ρd)/(m) is a constant of the wire. ∴dRR×100=2×0.2100×100=0.4%.

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