Two Wires Made of Different Materials Have the Same Uniform

question 27

Multiple Choice

Two wires made of different materials have the same uniform current density.They carry the same current only if:

• A)their lengths are the same
• B)their cross-sectional areas are the same
• C)both their lengths and cross-sectional areas are the same
• D)the potential differences across them are the same
• E)the electric fields in them are the same

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Definitions:

Micrometer

A precision measuring instrument used to measure very small distances, thicknesses, or diameters with high accuracy.

Rotor Vents

Channels or openings in brake rotors that allow for air circulation to reduce heat buildup during braking.

Lateral Runout

The measure of variation in the rotational path of a wheel, tire, or brake disc around its central axis, which can cause vibrations.

Lack Parallelism

A term possibly relating to the misalignment of vehicle wheels, where two or more wheels are not parallel to each other, affecting the vehicle's handling and tire wear.