The resistance of a wire is R. it is stretched uniformly so that its length is doubled. The resistance now becomes?
A. 2R
B. R/2
C. 4R
D. R/4
Answer:C
The resistance of a wire is R. it is stretched uniformly so that its length is doubled. The resistance now becomes?
A. 2R B. R/2 C. 4R D. R/4