1. What is the relative increase or decrease in conductivity of a conductor if the area is reduced by 30% and the length is increased by 40%? The resistivity is fixed. 2. (a) How much energy (in kilowatthours) is required to light a 60-W bulb continuously for 1 year (365 days)? (b) How long can a 205-W television set be on before using more than 4 kWh of energy?

1. What is the relative increase or decrease in conductivity of a conductor if the area is reduced by 30% and the length is increased by 40%? The resistivity is fixed. 2. (a) How much energy (in kilowatthours) is required to light a 60-W bulb continuously for 1 year (365 days)? (b) How long can a 205-W television set be on before using more than 4 kWh of energy?

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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