The Diameter of a 12-Gauge Copper Wire Is 0

question 14

Multiple Choice

The diameter of a 12-gauge copper wire is 0.081 in. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of the electrons? The number of electron carriers in 1.0 cm³ of copper is 8.5 × 10²² and e = 1.60 × 10^-19 C.

• A) 0.044 mm/s
• B) 0.44 mm/s
• C) 0.44 cm/s
• D) 0.44 m/s
• E) 4.4 cm/s

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Definitions:

Operation Performed

Refers to an action executed within a system, application, or process, typically resulting in a change or outcome.

Distributive Control

Distributive control is a system architecture where control functions are distributed among multiple interconnected elements, rather than being centrally located, to enhance reliability and flexibility.

On/Off Control

A basic form of control where a device or system is either fully activated (on) or completely deactivated (off), without intermediate states.

Hunting

A phenomenon in which a system oscillates or cycles in an attempt to reach equilibrium or a specific set point.