If an increase in length of copper wire is 0.5% due to stretching, the percentage increase in its resistance will be
A. 0.1%
B. 0.2%
C. 1 %
D. 2 %
Answer:C
If an increase in length of copper wire is 0.5% due to stretching, the percentage increase in its resistance will be
A. 0.1% B. 0.2% C. 1 % D. 2 %