The length of a certain wire is kept same while its radius

Last updated: 8/1/2022

The length of a certain wire is kept same while its radius is doubled. What is the new resistivity of this wire? E) It does not change. C) It is reduced by a factor of 2. B) It is increased by a factor of 4. D) It is reduced by a factor of 4. A) It is increased by a factor of 2.