4. An incandescent lamp, rated at 100 W, gives a certain amount of light when placed across the 120 V ac power line. Would the amount of light increase, decrease or remain the same, when the lamp is placed across a 120 V dc power line? Explain your answer. 5. How long does it take the voltage to go from zero to maximum on a 60 Hz power line? 6. On a 60 Hz power line, what is the time duration of the positive portion of one complete cycle?

4. An incandescent lamp, rated at 100 W, gives a certain amount of light when placed across the 120 V ac power line. Would the amount of light increase, decrease or remain the same, when the lamp is placed across a 120 V dc power line? Explain your answer. 5. How long does it take the voltage to go from zero to maximum on a 60 Hz power line? 6. On a 60 Hz power line, what is the time duration of the positive portion of one complete cycle?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter2: Basic Electricity

Section: Chapter Questions

Problem 27RQ: How do electric utility companies charge customers for electricity?

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