Answered: Suppose you are asked to design a…

Engineering

Electrical Engineering

Suppose you are asked to design a uniform wire from 1 g of copper

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter16: Installation Of Heating, Cooling, And Refrigeration Systems

Section: Chapter Questions

Problem 2RQ

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Concept explainers

Photoelectric

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

Suppose you are asked to design a
uniform wire from 1 g of copper
whose resistivity is 1.72 × 10-8Ω ∙ ?. If
the wire is to have a resistance of 0.5 Ω, and all the copper given to you is to be used, what will be the length and diameter of the wire?
What will be the length and diameter of
such wire, knowing that the density
of copper is 8960 kg/m3.

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