Question:
If the length of a copper wire is increased by twice, then its resistivity will be
If the length of a copper wire is increased by twice, then its resistivity will be
Options:
- a) doubled
- b) halved
- c) same
- d) one-fourth
- a) doubled
- b) halved
- c) same
- d) one-fourth
correct answer : c)
Explanation:
Resistivity depends upon the material and temperature and is independent of the length and area of wire. Hence, it remains the same.
Resistivity depends upon the material and temperature and is independent of the length and area of wire. Hence, it remains the same.