A wire of a certain material is stretched slowly by ten percent. Its new resistance and specific resistance become respectively
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Verified by ExpertsThe correct answer is:
D
but the area also decreases by 0.1.
mass 
mass.
Length increases by 0.1, resistance increases, area decreases by 0.1, then also resistance will increase. Total increase in resistance is approximately 1.2 times, due to increase in length and decrease in area. But specific resistance does not change.
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