2. The lighting needs of a classroom are met by 30 fluorescent lamps, each consuming 80 W of electricity. The lights in the classroom are kept on for 12 hours a day and 250 days a year. For a unit electricity cost of $11 cents per kWh, determine annual energy cost of lighting for this classroom.

2. The lighting needs of a classroom are met by 30 fluorescent lamps, each consuming 80 W of electricity. The lights in the classroom are kept on for 12 hours a day and 250 days a year. For a unit electricity cost of $11 cents per kWh, determine annual energy cost of lighting for this classroom.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 52PE: What would be the maximum cost of a CFL such that the total cost (investment plus operating) would...

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Question

2. The lighting needs of a classroom are met by 30 fluorescent lamps, each consuming 80 W of
electricity. The lights in the classroom are kept on for 12 hours a day and 250 days a year. For a unit
electricity cost of $11 cents per kWh, determine annual energy cost of lighting for this classroom.

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