The resistance of a wire is
A. proportional to its length and its cross-sectional area.
B. proportional to its length and inversely proportional to its cross-sectional area.
C. inversely proportional to its length and proportional to its cross-sectional area.
D. inversely proportional to its length and its cross-sectional area.
Answer:B
The resistance of a wire is
A. proportional to its length and its cross-sectional area. B. proportional to its length and inversely proportional to its cross-sectional area. C. inversely proportional to its length and proportional to its cross-sectional area. D. inversely proportional to its length and its cross-sectional area.