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OpenStudy (anonymous):
A 1-m copper wire with a radius of 0.5 mm is stretched to a distance of 2 m. What is the fractional change in resistance ΔR/R as the wire is stretched?
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OpenStudy (anonymous):
@shivam_bhalla
OpenStudy (anonymous):
@experimentx
OpenStudy (experimentx):
not really sure ... the density of copper remains constant, and the mass is constant -> which means the volume is also constant. equate two volumes of cylinder you might get an answer.
OpenStudy (anonymous):
i have to choose one of these ? 3.0 2.5 1.0 4.3 5.4
OpenStudy (experimentx):
why are you always after the answer ... process of finding the answer is really important.
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OpenStudy (experimentx):
|dw:1335196348481:dw|
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