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20.4 Exercise 17

Avg difficulty 2.5

What would be the maximum cost of a CFL such that the total cost (investment plus operating) would be the same for both CFL and incandescent 60-W bulbs? Assume the cost of the incandescent bulb is 25 cents and that electricity costs 10 cents/kWh \text{10 cents}/\text{kWh}. Calculate the cost for 1000 hours, as in the cost effectiveness of CFL example.

OpenStax College Physics 2e, 20.4 Electric Power and Energy, exercise 17

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.