If the temperature of a resistance wire is gradually increased, its resistance will
A
decrease gradually
B
first increase and then decrease
C
first increase and then remain the same
D
increase gradually
E
remain the same
Verified Correct Answer: D.
Physical Principles & Numerical Solution
In a metallic resistance wire (a conductor), as the temperature increases, the atoms vibrate more, causing more collisions with the free electrons. This increases the wire's resistance to the flow of current.
Source: Myschool Past Questions Archive (Record #42876)