If the length of a wire is doubled and its cross-section is also doubled, then its resistance will
A. become 4 times
B. become 1 / 4
C. becomes 2 times
D. remain unchanged
Answer:D
If the length of a wire is doubled and its cross-section is also doubled, then its resistance will
A. become 4 times B. become 1 / 4 C. becomes 2 times D. remain unchanged