Copper wire of diameter 0.279 cm is used toconnect a set of appliances at 120 V, which draw1750 W of power total. The resistivity of copper is1.68 × 10-8.m.Part AWhat power is wasted in 25.0 m of this wire?Express your answer to three significant figures and include the appropriate units.Pdissipated 15.88Submit Previous Answers Request AnswerPart BμĂX Incorrect; Try Again; 4 attempts remainingPdissipated=WWhat is your answer if wire of diameter 0.467 cm is used?Express your answer to three significant figures and include the appropriate units.μÃValue?Units?

Here Diameter of the copper wire = D = 0.279 cm voltage applied = 120 V total power consumed = P =…

Copper wire of diameter 0.279 cm is used to connect a set of appliances at 120 V, which draw 1750 W of power total. The resistivity of copper is 1.68 × 10-8. m. What power is wasted in 25.0 m of this wire? Express your answer to three significant figures and include the appropriate units. Pdissipated = 15.88 μA W Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining ?

Copper wire of diameter 0.279 cm is used to connect a set of appliances at 120 V, which draw 1750 W of power total. The resistivity of copper is 1.68 × 10-8. m. What power is wasted in 25.0 m of this wire? Express your answer to three significant figures and include the appropriate units. Pdissipated = 15.88 μA W Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining ?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 67PQ

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Concept explainers

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.

Question

Copper wire of diameter 0.279 cm is used to
connect a set of appliances at 120 V, which draw
1750 W of power total. The resistivity of copper is
1.68 × 10-8.m.
Part A
What power is wasted in 25.0 m of this wire?
Express your answer to three significant figures and include the appropriate units.
Pdissipated 15.88
Submit Previous Answers Request Answer
Part B
μĂ
X Incorrect; Try Again; 4 attempts remaining
Pdissipated
=
W
What is your answer if wire of diameter 0.467 cm is used?
Express your answer to three significant figures and include the appropriate units.
μÃ
Value
?
Units
?

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