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 why.

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 why.

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

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter13: Heating Control Devices

Section: Chapter Questions

Problem 26RQ

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Concept explainers

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

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1. 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 why.

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