A Rod (Length = 80 Cm) with a Rectangular Cross

question 32

Multiple Choice

A rod (length = 80 cm) with a rectangular cross section (1.5 mm × 2.0 mm) has a resistance of 0.20 Ω. What is the resistivity of the material used to make the rod?

• A)6.0 × 10⁻⁷ Ω ⋅ m
• B)3.8 × 10⁻⁷ Ω ⋅ m
• C)7.5 × 10⁻⁷ Ω ⋅ m
• D)3.0 × 10⁻⁷ Ω ⋅ m
• E)4.8 × 10⁻⁷ Ω ⋅ m

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Definitions:

Voltage Markings

Indicators or measurements that represent the electric potential difference between two points in an electrical circuit.

Replications

The process of repeating a study or experiment to verify its results and ensure its reliability and validity.

SES Individuals

Individuals categorized by their social, economic, and educational status, often used in research to understand the impact of socioeconomic factors on health and behavior.

Dangerous Levels

A term often used to describe concentrations or amounts of substances, or situations, that pose a significant risk of harm or injury.