Question 1020 of 790 · California General Electrician Exam
For copper conductors, how does resistance normally change as conductor temperature rises?
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 1020
- C: Resistance increases
Explanation
Copper and aluminum have a positive temperature coefficient, so their resistance rises as they get hotter. This is one reason ampacity is tied to conductor temperature.
More questions: Definitions, Theory and Plans
- 1021A circular mil is defined as the area of a circle with a diameter of:
- 1022Compared with a copper conductor of the same size and length, an aluminum conductor has:
- 1023Which of the following metals is the best electrical conductor?
- 1024In an AC circuit, the tendency of current to concentrate near the outer surface of a conductor is called:
- 1025To reduce voltage drop on a long branch circuit without changing the load, an electrician can:
- 1026A material that offers very high resistance to current flow, such as glass or rubber, is called: