The Length of a Certain Wire Is Doubled and at the Same

question 58

Multiple Choice

The length of a certain wire is doubled and at the same time its radius is reduced by a factor of 2. What is the change in the resistance of this wire?

• A) It is doubled.
• B) It is quadrupled.
• C) It increases by a factor of 6.
• D) It increases by a factor of 8.
• E) It is reduced by a factor of 2.

---

Definitions:

Population Standard Deviation

A measure of the dispersion of all values in a given population from the mean of that population.

Sampling Error

The discrepancy between a sample statistic and the true population parameter, which arises purely by chance.

Sample Size

Pertains to the count of items or participants chosen from a larger group for statistical examination.

Population

The total set of observations or elements from which samples can be drawn for statistical analysis.