A copper wire is drawn so that its length doubles while its volume remains constant
PHYSICS · Single correct · A Level · Physics · Electricity · Electricity
Problem
A copper wire is drawn so that its length doubles while its volume remains constant. What happens to its resistivity?
(a) It becomes twice its original value.
(b) It becomes half of its original value.
(c) It remains unchanged.
(d) It becomes four times its original value.