The wattage rating rating of an appliance,W, varies jointly as the square of the current, I, and the resistance, R. If the wattage is 10 when the current is 1 ampere and the resistance is 1000 ohms, a) Find the constant of variation. b) Find the wattage when the current is 0.5 ampere and the resistance is 300 ohms.

The wattage rating rating of an appliance,W, varies jointly as the square of the current, I, and the resistance, R. If the wattage is 10 when the current is 1 ampere and the resistance is 1000 ohms, a) Find the constant of variation. b) Find the wattage when the current is 0.5 ampere and the resistance is 300 ohms.

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter3: Determining The Required Number Of Branch Circuits, Lighting Outlets, And Receptacle Outlets

Section: Chapter Questions

Problem 6R: What is the unit load per square foot for dwelling units? See Table 220.12. __________

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