If a copper wire is stretched to make it 0.1 % longer, the % change in it's resistance is
A 0.2%increase
B 0.2%decrease
C 0.1%increase
D 0.1%decrease
A 0.2%increase
B 0.2%decrease
C 0.1%increase
D 0.1%decrease
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Answer:
A. 0.2 % increase ...............