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?

Question

anonymous · Answer

@shivam_bhalla

anonymous · Answer

@experimentx

experimentx · Answer

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.

anonymous · Answer

i have to choose one of these ?
	3.0
	2.5
	1.0
	4.3
	5.4

experimentx · Answer

why are you always after the answer ... process of finding the answer is really important.

experimentx · Answer

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