The Diameter of a 12-Gauge Copper Wire Is 0

question 34

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 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:

FIFO System

"First In, First Out," an inventory valuation method where goods first added to inventory are the first ones to be sold.

Straight Line Amortization

A method of allocating an asset's cost evenly across its useful life.

Fair Values

An estimate of the market value of an asset or liability based on current market prices or valuations.

Retained Earnings

The cumulative amount of profits that a company has earned, less any dividends or other distributions to shareholders over its life.