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B) You have a choice between a cable where the transformer box is at the very end (right where you plug it in) and another cable where the transformer box is in the middle of the cable. Otherwise, the cables are the same (same size wire, same total length). Give a detailed and well-reasoned/supported discussion concerning which cable will waste less energy. (Essential hint: energy is wasted because the wire material in the cable has some resistivity. Also don't forget that transformers might affect the current.)

B) You have a choice between a cable where the transformer box is at the very end (right where you plug it in) and another cable where the transformer box is in the middle of the cable. Otherwise, the cables are the same (same size wire, same total length). Give a detailed and well-reasoned/supported discussion concerning which cable will waste less energy. (Essential hint: energy is wasted because the wire material in the cable has some resistivity. Also don't forget that transformers might affect the current.)

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Problem 4. When you plug in a device like a computer, often there is a transformer box on the cable to lower the rms voltage to about 12 volts. A) Explain how such a transformer would work, at the detailed level of charges/currents/fields. (Probably will require ~3 sentences.) Give the relevant parameters to make sure it would end up at 12 volts if using an ordinary outlet. B) You have a choice between a cable where the transformer box is at the very end (right where you plug it in) and another cable where the transformer box is in the middle of the cable. Otherwise, the cables are the same (same size wire, same total length). Give a detailed and well-reasoned/supported discussion concerning which cable will waste less energy. (Essential hint: energy is wasted because the wire material in the cable has some resistivity. Also don't forget that transformers might affect the current.)
Transcribed Image Text:Problem 4. When you plug in a device like a computer, often there is a transformer box on the cable to lower the rms voltage to about 12 volts. A) Explain how such a transformer would work, at the detailed level of charges/currents/fields. (Probably will require ~3 sentences.) Give the relevant parameters to make sure it would end up at 12 volts if using an ordinary outlet. B) You have a choice between a cable where the transformer box is at the very end (right where you plug it in) and another cable where the transformer box is in the middle of the cable. Otherwise, the cables are the same (same size wire, same total length). Give a detailed and well-reasoned/supported discussion concerning which cable will waste less energy. (Essential hint: energy is wasted because the wire material in the cable has some resistivity. Also don't forget that transformers might affect the current.)
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