Example 2:Find the resistance of a piece of #18 AWG copper wire 400 feet long?Solution:First, state the formula to be usedKXLCMSecond, the value of K can be found in tableK = 10.4Third, CM of #18 AWG can be found in tableCM = 1624Fourth, substitute values in formula10.5 x 400 feet1624R = 2.56 ohmsR=R=9. Find the resistance of a piece of #12 AWG aluminum wire 250 feet long?

Copper wire 250 feet long (L = 250)

Answered: . Find the resistance of a piece of #12…

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. Find the resistance of a piece of #12 AWG aluminum wire 250 feet long?

Introductory Circuit Analysis (13th Edition)

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Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

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The photoelectric effect occurs when light (or similar incident radiation, including X-rays) falls on material together with a metal plate and causes it to emit electrons. The discovery of the photoelectric effect led to important new theories (and to a Nobel Prize for Albert Einstein). Photoelectric cells, or photocells, are utilized in burglar-alarm light detectors and garage-door openers (each employs a through-beam of light this is broken when something movements throughout it), and also to play soundtracks on film movies (in which a light beam shines through the soundtrack encoded at the film and is "read" with the aid of the photocells).

Question

Example 2:
Find the resistance of a piece of #18 AWG copper wire 400 feet long?
Solution:
First, state the formula to be used
KXL
CM
Second, the value of K can be found in table
K = 10.4
Third, CM of #18 AWG can be found in table
CM = 1624
Fourth, substitute values in formula
10.5 x 400 feet
1624
R = 2.56 ohms
R=
R=
9. Find the resistance of a piece of #12 AWG aluminum wire 250 feet long?

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