If a Mile of 24-Gauge Copper Wire Has a Resistance

question 31

Multiple Choice

If a mile of 24-gauge copper wire has a resistance of 0.14 kΩ and the resistivity of copper is 1.7 × 10−⁸ Ω ⋅ m, what is the diameter of the wire? (1 mile = 1.6 km)

• A) 0.40 mm
• B) 0.50 mm
• C) 0.63 mm
• D) 0.80 mm
• E) 0.25 mm

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Definitions:

'>' Symbol

A mathematical symbol denoting that the value on the left is greater than the value on the right.

Alternative Hypothesis

The hypothesis that proposes a difference or effect, in contrast to the null hypothesis, which asserts no effect or relationship.

One-tailed

Refers to a type of statistical test where the hypothesis specifies a direction of the expected difference or relationship.

Standard Deviation

An indicator of how much the values in a dataset spread out or vary from one another.