Question
A wire of a certain material is stretched slowly by ten percent. Its new resistance and specific resistance become respectively
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1.2 times, 1.1 times
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1.21 times, same
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both remain the same
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1.1 times, 1.1 times
Solution
B.
1.21 times, same
In stretching, specific resistance remains unchanged.
After stretching, specific resistance (rho) will remain same.
Original resistance of the wire,
